hi Lou23,
My mom is BPD'd.
Something that you said that resonates, your daughter "is good at saying she doesn’t remember conversations"...but later, when confronted "she will then remember our conversation."
Yes, this is normal, in my experience.
It can range from "remembering" she told me her father sexually assualted her numerous times? (then later not remembering it, and in fact telling me it only happened once), to not remembering if she asked me if she should feed the dog 1 1/2 or 2 1/2 cups of food a day.
Don't take it personally, after many many years of dealing with this, I realize, she's dissociating.
b