I feel like even with these changes, her mana sustain is still an issue. Like Maokai, she could really do with a change(s) in this regard.
Perhaps reduce the cost on her Q to 60/65/70/75/80 from 80/85/90/95/100.
**Or** give it a partial refund if she hits an enemy champion or monster. For example, increase the cost to 100/110/120/130/140, but refund 50% of the mana if she collides with a monster/champion. This promotes being aggressive with it and/or using it for disruption/damage purposes (including in the jungle) but makes it so spamming the ability to escape or wall hop has a bigger cost. It seems like a payoff that would definitely help her jungle, but an occasional tradeoff for other purposes.
Something like this could be huge for her.