She's fine. She just needs some slight tweaking but overall I don't see anything wrong with her concept, just more with her purpose as it seems I am seeing a lot of people player her as a DPS rather than a Healer and while, I'm actually pretty confident in saying that still works, I just don't feel too comfortable with the solo healer picking her and doing that.
So maybe at best adjust some of the numbers, and that can be done in a number of different ways. But other than that I like where she is.