Well I am a daughter so the worst thing for a mom to do at least in my experience is for you to spill your guts about your childhood and then for her to backhand you and tell you that you are wrong. It is like you are still a child and as if you are basically being told "You are how old and you still aren't rational or smart or wise or etc. enough to be an adult". Whatever has happened between the two of you if you want a relationship with her then you have to look at things from her shoes, if she was fed BS about you then it isn't her fault....if you did things for her own good she may have not seen it through your eyes...etc. I maybe wrong but it is possible neither of you have put the shoe of the others on. If I were you I would hand write her a letter. In it talk about why she is important to you now and when she was a kid, tell her how you felt you needed to defend yourself from other loved ones in her life [tell her why you felt this way, what transpired, how you adore those people for caring for her even though, etc.], and make sure to ask her how she feels about you, what you can do to be more active in her life, if it is possible to make up for old times as you were only human and at that a first time mom. She is more than welcome to deny your request but tell her that is okay and no matter what that for her and her children you will be there.
If it were me I would like this letter even if it was knitty gritty as long as you do not mention/hint at reading her blog [AKA diary], tell her she is wrong, or insult other people she loves. Granted your daughter maybe a different person than me but it is certainly worth a try.
Best wishes.