Something most people don't realise is that Ying can do a lot of Damage Output.
Which results in people running right in to kill her and then end up dying.Try to keep distance and kill her clones to decrease escape and healing options, then go in.
Your ult is extremely important. you need to do dmg to get it quickly. moral boost and generalized vollys of weapon dmg into the frontline when not in active combat should bring your ult to use very quickly
When a Ying uses Dimensional Link, a way to track her down is destroying her clones. She might teleport into a clone you're destroying and take damage, and if not, it will still be easier to find her as you narrow her escape options down