Depends on what stage of her story are you currently at. If you completed X-Ray questline, and her initial "building trust" quests, you should be able to buy Ava's pics from the shop, which will progress the questline for both Reina and Ava further.
I never did the x-ray questline. I bought all her photos just cuz I could since I have infinite money. the only interaction I even had with her was she got me access to go into the girls dorm by convincing the bot that I identified as a girl
