Question... Have Kyalin shippers discovered Heituat??? Because it's the exact stuff you are looking for, but the interactions are CANON.

You've got a high-strung, middle-aged military-type who scares everyone with her searing glares, EXCEPT her exceptionally skilled and good-humored waterbending healer.

Like Lin, Hei-Ran is absolutely deadly and intimidating but also so babygirl. They also both have a penchant for offering their life up if it means saving others. Meanwhile, Atuat has the attention span of a fly and even worse impulse control, but her waterbending skills are prodigious, and she gets things done when it matters.

So trueee Heituat and Kyalin supremecy ahhhhhhhhhhhhhhhhhhh I love them

I wholeheartedly blame the Avatar animated universe for me liking older women.

Do I have to elaborate? Nah we all no its the truth

Had to be done. Sorry

Yeeessss omg this is so good I love it Kyalin supremacy forever!

They’re married your honor

"They have never interacted in canon" TO YOU I've seen them kiss though

Yup they definitly kissed in the show I saw it