She's trying to cling to her dad because she feels she's losing him. It's natural. She's doing what we all do when we think we're losing someone: get clingy and needy. And we all do backflips when the person who has withdrawn themselves from us throws us a few crumbs of affection.
She's growing up in a solid parochial school environment. She knows her dad is wrong. But, perhaps, sub-conciously, she thinks she had something to do with it and wants to win his affection.
Regarding your other post. I don't know what to say except learn what you can from this. Think hard.
What have I, Theoden, learned?
I took my spouse for granted.
I believed that our vows alone were sufficient to keep us married -- they are not.
I lost myself. Wasn't on my game regarding life-goals, career, etc. I was sleepwalking through life.
I was a nice guy. But way too nice. Not passionate or open-hearted.
I never really expressed my feelings to people. I merely negotiated to avoid conflict and get what I wanted. But no one ever really knew me.