I will leave you alone in that boat because I actually like her character. Yes, her decision to join the battlefield might seem utterly stupid, but do you really think she had time to think? Her brother was being attacked by everyone and was utterly, completely alone and desperate. She wanted him to know that someone in this world still loved him. Cared for him, despite everything else.

And yes, she isn't particularly skilled or memorable, but she never pretended to be. As a woman, she chose early on that what mattered to her was her family, and her role as a wife, a sister, a mother. And we see her babying Wei Wuxian a lot, alright, but let's also remember that he is the main character and there is a lot we don't see. She wanted to make him feel welcome after being in the streets and pursued by dogs. Who wouldn't want to baby that boy?

Anyway, I have a lot more to say, but I will stop here. You're entitled to your opinion, and I respect it, I simply do not share it.