You want more assurance?  To be sure, check out her reviews on TER.  If she doesn't have them, try her at considerably greater risk, as there is no way of finding out unequivocally whether or not she is LE.

Join a screening service.  Then you can contact a screened provider with current reviews.  You may be a newbie, but just by being on TER, you should know better. Anyone can steal some pix and put up  a hot ad on Backpage.  You really have no idea who you're dealing with on the other end of that e-mail.  --z

 

Only 1 review is too few.  Newbies should stick to well reviewed ladies.  6-10 reviews and at least some by experienced reviewers  6-10 reviews themselves.  
Answering any services question increases the risk as far as LE.  However, the greater risk is low performance or a scam.  Yes, you need VIP for reviews but the cost is far cheaper than even one spoiled date. This is why TER exists.
Just having reviews is not enough...  I've seen ads linking to reviews that were terrible!  The girls thought guys were too lazy or stupid to check the reviews out!  Maybe some are.  I learned my lesson.

RUN and DON'T look back.

your starting off on the wrong foot.
PLENTY of beautiful providers out there, well reviewed and will fuck your brains out.
DO IT the RIGHT way man................or, DON'T DO IT AT ALL.