I don't think it's too relevant, unless its something comically dumb like she hating movies because she failed an audition or something like that.
I mean it's not like she was abusing her daughter, she was just very strict. The kid didn't seem to have many issues aside from her paper thin resistance to ""erotism"", she has friends, good grades, she didn't seem to feel bored at school either and she doesn't seem stressed from studying too much either.
Its not that much of a big deal, just a somewhat questionable way to raise her daughter, plus there didn't seem to be any issues until recently, things were working well as far as she could tell and when problems showed up she changed her mind, she understood she couldn't let things stay like this and gave in as much as she could.