For me, it doesn't matter if she is 18 or 28 or even 3x. what important is the performance. Many years ago i remember picking up a 19yrs old local from the web, paid $200 over night. slightly above average look and nice body, but the blowjob sucks and service this cannot that dun want.
Total disaster !!!! in the end i had the worst paid service night. used 9 condom only produce 1 shot. most unforgetable experience in my playing life.

Its is all about luck and the feel the 2 of u have, if both of u click both of u can have a great fuck.
Cheers