Kindred's in lane sustain is too strong
I get she needs it to survive in the jungle and that's fine. That being said, it shouldn't be as strong when she's not a jungler. Unless you outright kill her during an early trade, she can just heal herself through normal CS'ing habits. Then she can proceed to zone due to her sustain. It shouldn't be able to activate versus minions and champions until she gets 6 stacks or at the very least it should be less potent.