One thing that I found disappointing is that she will not travel to the Underdark. When she is recruited at Moonrise Towers, she is on a quest of vengeance and will not travel back from the Shadowlands, which makes a bit of sense for a reason...but if there is one environment ripe for content where Minthara's character can shine, it is the Underdark!
You actually can whether its an intended side effect or not is the question, this involves casting a silence spell on Miinthara before you go back to Underdark as long as you won't enter the Sharran mausoleum in Act 2, that is the start of no-return point to Underdark.
But it would be actually neat of course if there were some clear and purposeful designs for her and Underdark in some unique way, typically a missed opportunity.