She should not have a heal. Her abilities should only do damage and that's it. She already out damages her ADC in every aspect. She has a root, an ability that let's her allies go invisible that also increases their MS, a Q poke that's longer than the lane itself with no cast time so dodging it is all about how lucky you are and it does an excessive amount of damage to enemies and turrets. She can stack mist souls which procs a better passive than Thresh. A global ult with no cast time? Her whole kit is flat out disgusting. She shouldn't have created. If you want her in the lore, just add her in the lore. Match-ups that are supposed to work, plays you're supposed to come out winning all get thrown down the drain because she can just heal her allies. Remove the healing from her kit.