There are so many insightful and great responses on here to this issue. And all of them are probably valid in the context of the relationship in which they occurred.
I agree wholeheartedly that you cannot assume your WS knows your needs. Yes, I like to think if it were me I would be up and available every time. I'll never know. What I do know is that I require less sleep than others to function. I know that my WS requires much more sleep than I do. I know that if she spent every night I couldn't sleep attending to my needs she would lose her ability to think clearly and be there for me. Often she tries, though, especially if I ask. However, I end up feeling rejected because she just can't stay awake and that's a horrible position to put her in. When I'm angry I think (and sometimes even say) that she should. She was able to stay up late and sext with another woman to mess this all up, so she should be willing to do that to fix this. But my logical side recognizes that there is a huge difference in attention and exhausting stress between the two if them, as unfair as it feels.
Also, we soooo want to believe that our WS's are so remorseful that they will do anything and everything above and beyond what we ask to help us heal. However, remorse doesn't play out the sane in everyone. I can't imagine the nausea of knowing what I was capable of doing to hurt the one I love. The need to avoid the pain and/or conflict that results from responding all the time and trying to focus on being compassionate and sharing in a way that minimizes rather than presents triggers. Or even the feelings of worthlessness that accompany the sheer heart brokenness they caused and the way that effects their ability to feel worthy if even providing comfort.
Often times we do ask for what we need and those needs go unmet. It would be so much easier to have our WS's respond to what we need without asking because any more feelings of rejection surrounding this situation are unbearable. There have been times that I feel I've voiced my needs until I'm blue in the face and yet they still go unmet or misunderstood. I like to think it's without intention, but that's so hard to realize or wrap my brain around. How can they truly be remorseful and totally ignore this very important need I have that I've repeated over and over again?
If voicing your need is an issue, then figuring out why is important. Is it because she hasn't in the recent past? Is it because you feel unworthy of having them fulfilled? Is it because you feel that you need more than she's willing or than is necessary? Is it possible that you are aware that anything she does wouldn't help anyway?
That's a trap we unknowingly set for them too. We think we need something from them, and yet when they provide it there is little relief, it triggers more pain, or we unintentionally set up an opportunity to punish them by berating them or asking for more.
Maybe it's ok that you recognize she's tired or should be exhausted from doing all she has been doing. In the end it's important that we all (WSs and BSs) recognize that we are ultimately our own provider of needs in life. A relationship, I'm now realizing, affords is an opportunity to share a life ore fulfilling than we could have on our own, but is not a place to expect our basic needs to be met constantly. Yes, my want for sexual attention should remain in the relationship, but the need it fulfills is being worthy of it. I can meet that need without sexual attention from my partner (or anyone else) by doing things for myself that feed it, such as work out or dress nice. Self soothing is so important in a relationship. It revivers pressure from the other person so that when we are in distress they have an opportunity to offer comfort as a plus rather than an obligation. And it's so nice to know that someone else wants to help rather than feels obligated. It feels more loving. So these times may be the perfect times that we need to explore ways to do that.
I'm not saying that our needs as BSs aren't paramount or appropriately above and beyond while we navigate the healing process in our relationships. Nor am I saying that our WSs shouldn't feel an urge to meet our needs for security, comfort, compassion, understanding, and validation. If they were able to do what they did and then continually refrain from providing that for us as we heal in the relationship we have our answer as far as reconciling. What I'm suggesting is that at some point we need to begin meeting them on our own so that we establish better ways of being as we heal and avoid continuing a pattern of need fulfillment that will eventually become maladaptive to the relationships we want and deserve.
In the end, if this is a need you have that will help you heal in the relationship with her by having her meet it, then you need to discuss it with her. Be prepared to explore ways to meet it on your own if it's too much for her or for the future as you both heal. And be aware that there may come a time when she attempts to fulfill your needs because she feels obligated but is unable to recognize her limits. Attempts to fulfill needs by WSs when they have reached a limit can add more hurt and feelings of betrayal or reflection to an already difficult process of rebuilding trust.
All couples have their unique patterns of relationship issues that contribute to or exacerbate the healing process. I have to constantly remind myself that just because other WSs show more stamina for compassion, remorse and reassurance doesn't necessarily mean that mine is jilting me, holding back, or is not remorseful. Sometimes it means that our situation is different, she is different and I am different. Some patterns in relationships healing from infidelity need to be paid attention to, but others need to be put in context.
I too suffer from lack of sleep. I wish there was a hotline we could call for help with this. I disagree that coming to SI is unhelpful. There have been times that coming here when I couldn't sleep helped me. However, it is a tool to be used with caution. If your need is validation and not feeling alone or crazy, then it's great. If you find that it revs you up or exacerbates your negative emotions, then maybe journaling or distraction is a better way to go.
I hope you find some peace.