It's perfectly reasonable to run her for some content only to drop the TM, as long as you plan for that in your comp. So if you have 150% c dmg, that's roughly 25% max HP base damage - you still have to worry about defenses and such, but this may help you visualize how the scaling works on her damage) or to build her with accuracy instead of both. As your gear stands right now, it's probably worthwhile to either build her with damage (you can look up the damage calc, but a very shortened explanation is that her Heartseeker will deal X. So if using her in Dragon is your primary goal, accuracy doesn't matter in your build. For other areas her accuracy is useful, but Dragon's TM can't actually be dropped.

Now, I noticed you were worrying about accuracy for her or focused on sets and stuff, and that's probably the wrong way to worry about gearing her. Even if you can keep her alive and even if she makes killing the boss happen faster.if you are losing more time from including her on the team vs the waves than you are saving vs the boss, she's not actually helping your team a whole lot.

She's going to be a liability to any team she's on until she gets to the boss, so not only do you need to build the team so she doesn't get targeted first (giving her more HP than someone else using an affinity tank, lots of CC, etc), you also need to have a team that doesn't suffer from having an effectively dead spot on it through the waves. Her stats alone aren't the only barrier, though, you also have to have a team that enables you to have the luxury to run to her. While her upsides are very positive and once you get far enough in the game that you have the gear to use her she becomes amazing.until that point she's absolutely useless for you. People talk up Coldheart a lot, but I think all that talking has done you a disservice.

Coldheart raid shadow legends reddit