The QT is.. IMO.. really underpowered..
Shamblers are weak, don't hurt much and if you want to have a lot of them and more powerful ones you have to spend so much skill points.. (Yetis are much more easy to use, summon and support)
You can summon only 2 by 2.. If you want to heal.. it's complicated since they can die easily even if you have just summoned them..
Switching mode is a bit slow. She should at least be able to switch while running, really (since scarabs are running for her ^^)
She has more skills and not more points.. and Compost should... for a plant, heal her slowly..
The good point is her big area spell.. she happily has this one because the spike wave isn't a good spell.
The shield is good, and combined with eating shamblers it's ok but it s not (globally) effective enough because you need to spend skill points for shamblers, eating them and shield to tank. Sedna's spell use less and still do 200 area damage at highest level.
And finally the skill for structures.. now works better with compost but do less base damage than before (2000 now).. ok it s a distance spell but when I see Rook dealing the same and healing in the same time...
I don't know.. tell me if I'm wrong, I feel weaker than others when I play her.. even if she is really pleasant to play..(and could be more ^^)