In one case it was because she reinvented herself from a FBSM to a GFE gal.

In other cases, the gals got tired of their old names and adopted new ones, but I know both very well and there was no evil intent.

TER lists both by both their handles.

common sense to change the damn email, number, and not link to the reviews in another name lol. Goodness. Many providers have a really high end persona and then another one that is average, which allows them to hit two markets. If the high end guys find out she is serving it up for less, it takes away from that exclusive image that made them pay so much to begin with.

As a newbie, be cautious about that.  Seven reviews is not a large number, and there may be things going on that you probably don't want deal with as a newb.  Best you consider those ladies with a stable, consistent, and excellent review history over at least a year or more when getting starting and establishing yourself.