Assuming you've already done your due diligence in googling the images and phone number, etc. Also google her ad copy (b&s agencies tend to re-use the same copy, or steal it from independents).  

Does the ad copy sound as if she wrote it?  

Does she have a site? How professional is it? Does it look like she invested a significant amt of time and effort into it?  

Does she belong to screening sites such as p411 and Date-Check? Does she accept those forms of verification?  

Does she offer doubles w/another known and verifiable provider?  

If she fulfills some of these characteristics, there's a much better chance she's legit.  

Whether she is legit or not...if no reviews are a deal-breaker for you, realize that's YOUR preference. If you aren't comfortable taking the plunge...then don't. Don't ask her to explain herself and her business, you'll just come across as a timewaster

She wants to sell you a vacuum cleaner.

What I see when I read your post

 
I have a crush on a photo that I've seen on an Eros ad. Despite the fact the photo is most likely, not that of the provider featured in the ad. I still lust after the lady in the picture, so much that I'm willing to go against common sense, and want to pursue the ad.  

 
Go see her, and write a review.

u come here and ask , i know a few who are real , ask the girls too its

Really that simple ......and a few are smoking hotttttt.......just watch for the dumbass websites .!  

If nothing leads to an answer, you can also ask the local board with the link. If it looks "too good to be true" then it probably is....

only see well reviewed providers. Even as an experienced hobbyist, I will not see a provider without reviews unless a fellow hobbyist that I know vouches for her. No exceptions.