It is for Lena -- The quest is [Something Old]; if you haven't gotten that, then that means you haven't gotten her to 100 yet.lena not kay
Edit: Seems you have a bug/glitch that doesn't let you gain Exp from her? Guess I read it wrong, my bad.
Btw, anyone else getting a [TypeError: Cannot read property 'split' of undefined] after finishing Kay's level 2 event? (Aka the one w/ Sarah control)