I think the Act 1 choices regarding Minthara are fine, but the big concerns are about follow-up content and reactivity during Acts 2 and 3. That's where some things either appear to be lacking or, perhaps, currently come across as awkward and buggy.
Easy example: You can try to ask her about Shadowheart quite early in Act 2, but Minthara's response will seemingly spoil stuff that hasn't happened yet. I have to assume there's a more neutral or at least different line that isn't being triggered.
That said...it's nice to use her as a paladin, particularly if you aren't playing as one or don't plan to respec anyone into that class.
