According to Ron, whose recollections are usually reliable, she was one of the girls at Torreyson Drive, not in the UK.
It was Nick kent who placed her in London, I think in his magnificent story The Mighty Ig vs The Hand Of Fate, but I think it was a simple mistake which is understandable considering the Stooges' complicated drugs and groupies liaisons. Her boyfriend was apparently one of the band's dealers, so it was a weird druggy menage a trois from a time when, to quote Ron, "Iggy thrived on chaos".