I agree with the previous posters. This is not sustainable and at some point, if not immediately, this sort of existence will effect your child's development.
A wholistic nurturing environment requires either two loving parents who have genuinely reconciled or two loving parents who have genuinely divorced and have reconciled with themselves. Or, at least one loving parent who has genuinely divorced, has reconciled with themself and has moved on to find happiness.
There has to be bedrock in this child's life. Either you, her, or some wholesome combination of you and her. Currently, you have none of that.
I would suggest, if you intend on keeping the family together, to continue definitive follow-thru actions. Definitive IC for both of you, definitive reconciliatory actions, and eventually, when the time is right, definitive MC.
Or, I would follow through with D and self repair. At least this child will have one happy parent providing that bedrock.
Living in limbo is not the answer for you, your child, or her.