(Spoilers MAIN) Did anyone notice the Pretty Young Woman selling Lannisport wares in Vaes Dothrak?

In AGOT Daenerys VI, before she runs into the poisoned wine stall, she wanders across the Eastern Market and Western Market of Vaes Dothrak. In the Western market, there are vendors from throughout the free cities but very curiously, there's a woman selling Westerosi wares.

Dany sees "a pretty young woman" in the market selling Lannisport goldwork, (rings, brooches, belting medallions) with "a huge eunuch guarded her stall, mute and hairless." Tysha was well paid for her ordeal, a silver stag from each guardsman and a golden dragon for Tyrion. Could this possibly be enough to buy 1 Unsullied in the slave cities?

If you recall in Tyrion's telling of Tysha's story to Bron in AGOT, Tyrion and his brother stumble upon her near Lannisport. After Tywin bannishes her after the rapes, and she's sent away to never be seen again. By Tyrion at least

According to the wiki Tysha was born in 272. AGOT takes place in 298, making Tysha only 26 at the time. Not sure if Dany would consider her still a young woman but in our world that's young.

Is this just some random young girl, who knows Lannisport belts and goods, with a mute hairless bodyguard, all the way in the dothraki sea? Or the long lost wife of the rightful hier of Casterly Rock, who was sent away to wherever whores go? With GRRM gardening, it's tough to say because it hasn't appeared in any other books.