I guess in movies or tv nowadays they kind of all have to have flaws to seem realistic and not too Dr. Cosby (heh).
So her being flawed wouldn't really be a good way to justify her actions, since the reality should be that they're all human. Not to say that her actions were terrible or the worst of the bunch, but sometimes she just wasn't likeable, and downright cruel other times.
As someone who got all the way to S14 in Supernatural and didn't watch TWD until maybe about a year or two ago, I think enough time had passed to cleanse my character palate and I see them as two separate people. Especially with so much Javier Bardem in between.