My opinion is that people put way too much emphasis on "acts preformed" than the actual tone of the date. GFE to ME means, we talk, get to know eachother, then move on to something more intimate, kissing, cuddling and MUTUAL satisfaction. I dont believe because you offer GFE means that you have to perform BBBJ or other un-safe acts, just because one may do that with their SO/BF or GF. (For thoose that do offer thoose services, that is their choice)
By saying "True GFE", the lady in question might be saying the "True" part, so that you know she will not be giving a mechanical/detached service or maybe it does mean, that she may do BBBJ. No one knows but HER!
I think maybe you should email/pm or call her again to clarify what her definition of "True GFE" means. If she wont reply, there maybe a reason and if you absolutly need clarification, move on to someone who has no problem doing so! With every lady there is a different take on the term GFE.