Virtually everything you do in this hobby carries some risk. You can wear a one piece wetsuit and still the potential for transmission exists. The fact that this providers has many "bbbj" in her reviews should not make a single bit of difference - if you are going to hobby, you need to protect yourself at all times to the level that gives you the illusion of safety. If this lady is mking you nervous for some reason, but you still want to see her, then insist on a cbj and bring along some flavored (or at least plain, unlubed) condoms. Just a bit of advice, once you get there, if you treat her like you think she is dirty, you probably won't get very good service.

In my opinion, bbbj is a very low level of risk to take, but that's just me.

If you're nervous, wear the hat. You'll feel better about it in the long run.

Just tell her you prefur to be covered ofr everything.  I don't think any provider would turn you down for that.
That should put your mind at ease.

Depending on your age, some guys find it more difficult to cum with a raincoat on.  For one, this is why I often prefer BBBJ or russian to FS.

You have no worries, the providers are the ones who put themselves at risk every time they do a bbbj.