If you read her blog (link below) you'll see that she says she "interacts with her fans regularly".  She's very big on chatting with her fans on her site, and on her twitter - gives her phone number on her twitter and in her store (links from her blog).

She also does "fan fuck" shoots.  I don't know what's involved with that except that I know it's a real porn shoot with cameras, make-up and everything.

On one of her sites: www.mygirlfund.com/TaraLynnFoxx she says:
"I love to be a bad girl! Flirt with strange men, let them spoil me... and sometimes I find new fuck buddies right off the street! That's how much I love my sexuality! ... Hit me up and let's see if we can have some fun!"

As for whether she does escorting... well, since she posts her number and accepts calls from fans, and invites people to contact her for possible fun... I'd suggest you call her or write her through one of her sites and ask her yourself.