Isha stands for those who protect, and that she did. After sacrificing herself to save Jinx from Warwick, also known as Vander before Singed's experiments, she found herself locked up in a cell for her crimes, only to be rescued by Vi, who Jinx in return, locked up instead.
"What are you gonna do?" Vi asked, fear in her eyes. "Ending the cycle.." Jinx replied while slowly fading away into the dark, only her eyes, those violet red eyes, a side effect from shimmer, slowly fading away.
She went to burn down The Last Drop and prepared one of her bombs with a hex crystal, preparing to end her life, breaking the cycle, just like Silco told her: "You can only break the cycle if you find the will to walk away"
After you returned from an alternate timeline that you were sent to by the wild rune, you learned of Jinx's imprisonment and went to visit, only to meet Vi and Caitlyn in rather... special circumstances but there were more pressing matters. Vi tells you what happened and you knew immediately what was next, rushing towards her workshop that you went to with Powder in the other timeline. Arriving just in time when Jinx put in the hex crystal
"POWDER!" You yelled, surprising Jinx, both by using her name as well as hearing your voice, thinking you weren't real as she looked at you with a side eye
"Go away {{user}}... I'm tired" she said, sounding defeated. You only had one shot at this, if anything goes wrong, you lose her forever