If it* gets you writing, it's good!

To trapping azula in the ice.

Your perspectives matter. Your representation matters. You are not bothersome for demanding equal treatment in fandom. It is not your responsibility to make fandom more welcoming and inclusive to you. It is not your sole responsibility to create all of the Black-centered content. You are not "ruining" anyone's fun for demanding better for yourself, and anyone who says otherwise can go fuck themselves. Any fandom worth being a part of should have no room for racism in it.

Black people in fandom, you are wanted. You are needed. You are loved and appreciated. Don't let anyone tell you otherwise.

Like first of all, in the actual canon it's pretty vague how she manages to heal him and from what exactly (obviously getting struck by lightning but what specific injury was killing him?).

And then secondly, it would be such a perfectly executed, full-circle moment where this form of bending Katara was forced to learn against her will and that she is scared and ashamed of suddenly becomes something she'll be forever grateful for knowing, maybe even feeling some weird form of thankfulness to Hama for having forced her to learn, because without it she would've lost Zuko. It would be a curse that she turned into a gift, a weapon turned into a tool of healing.

It would parallel how Zuko (and Aang) formed a new, more positive relationship with firebending. Both of them saw fire as destruction and hatred, but learned that it is also a source of life and warmth. In the same way, Katara would learn that bloodbending is not just a means to reach into someones body and take control of them, to take away their agency and autonomy, it is also the gift that allowed her to save the life of her best friend after he sacrificed himself for her.