>>532169637
She gets Blessing while she has positive SP and Despair while she has negative SP

Blessing gives you the Protecting Sword buff and makes you apply sinking potency when you're hit once per turn, and Despair gives you the Piercing Sword buff while making you apply more Sinking count on your first hit per turn

Protecting gives you aggro and defense up levels equal to Protecting stack
Piercing lowers your aggro and gives you offense level up equal to Piercing stacks

Deep Tears is her unique charge that's spent on her skills for more damage

Tear-sharpened is a buff gained from her defensive skill that lowers her SP per turn while also giving her increased damage based on stacks as well as clashing or piercing power up depending if she has Blessing or Despair active
Tear-sharpened stacks up to three times but the final coin of your base attacks skills will consume all three stacks to do further increased damage and apply Sinking potency and count so it's better to sit at 2 stacks unless you're going in for the kill next turn

I think that's about it
It's all honestly quite incredible