I have two somewhat contradicting thoughts on this:
1 - Even with the Roms, some of them are actually OK. Among other clues, one good sign can either be a fairly permanent residence in a town which would imply repeat custom to keep the income going. If this girl is around all the time, maybe she falls into that category?
However....
2 - She also appears to be in Bristol at the moment:
External Link/Members OnlyProbably other places too, it's amazing how much these pictures get recycled.