Top 3 choices...
Well, without contact info the ad would be useless, so will assume that must be there...
Otherwise:
some selfies (which should answer the age, weight, ethnicity question),
enough text to get some idea of her personality, services, and approx location,
and some indication of donations required.
(and then do a search on perb...)
Really, it's the text that matters most to me. If it's overtly flowery, or it's walls of "I'm so special" text, or if it's anything too curt, then I pass.
I look for the ones that are clear, and obviously written by someone real. It can be long, and it can be short. But mostly, does the personality shine through...
That will tell me whether I will likely get along well with her...
(so far, so good...)