Some gals will waive screening for a hobbyist who is well known, etc.; but I take it you are pretty new at this as I don't see any reviews from you, and your handle is not that familiar to me.

If she is well reviewed, then I think it is OK, but if you feel antsy about it, I would bail.

she may have screened you in ways you are unaware of.  Providers have their own little methods of screening that they often keep secret.  Sometimes they even go with a gut feeling about the client.  Like mrfisher said, if you are uncomfortable with the situation, cancel the date.

Swim

Did you book through P411, or Datecheck? I had a lady do nothing more than ask that request a request through P411, so that could have been enough.

If she has over 30 reviews as you said, I would not worry about it, and I would see her.  
First of all, she may have screened you in other ways without you even knowing (something as simple as your email or phone number or however you contacted her). Some ladies have other ways of screening. Some also just go by a gut feeling. Some just do random screening and dont screen every single guy. Also it is the end of the month (rent is due). And some dont screen even though their websites etc, say screening is required. I have seen several ladies who say screenig is absloutley required but who did absolutely zero screening of me. It happens.

Now if you were TOFTT and seeing a lady with no reviews, that might be different as without screening you are both at risk. In this case, the risk is almost all on her end. Go see her and have fun.

The first 2 Providers I have met with...neither screened me at all.  Although I did initially make contact with them via p411...apparently that was enough for them.

I did put me off though.  I've spent many weeks researching and reading, and was really expecting to be screened...especially as a newbie with no references.  When they didn't really screen me at all...nothing but emails or texts...it made me nervous for sure.