http://www.eros-dc.com/files/165236.htm

I have looked up the phone number and her name on TER and nothing comes up.

maybe, but "Visiting from May 3rd - May 17th!" is a red flag.  who visits for 15 days?  no legit touring girl I have ever heard of.

this young lady was here more than 15 days.

http://dc-escorts.cityvibe.com/escorts/list/360953.htm

Its rare, but it happens.

But the ad looks TGTBT.

I disagree.  Many legitimate providers visit for two or three week periods at a time.  Allie Oh, who is currently in DC for much of May, is one good example.  Jennifer Jordan, who was in town earlier this year, spent almost a month here and enjoyed glowing reviews.

Well, sometimes I go to DC for a month. but if she has no reviews with so many days working you should wait to see a few first.