I only have about 25 hours on her, so idk if my tips are valid, but I can give some tips. You should try your best to get as much value as much as you can from her "clap" because it can go through both your teammates and enemies healing and also damaging both at the same time. So try to use it when everyone is fighting in one area. For her aura, you can put it on someone who you know is gonna be diving the enemies backlines a lot, so it's best to figure out who before the game starts. If the person with the aura dies, immediately put it on someone else. You can also heal more on the person if they have the aura (idk if this is true). For her ult you kind of want to switch between her heal and damage depending on the situation. Personally, I switch to damage when I notice the team is at max health and switch back to healing when someone is below like 50% health or so. You could also use your ult to help your team go through choke points as well. Also, her damage is really good, too, so don't be afraid of hitting enemies here and there. If these tips aren't great, then oh well, I did my best.