The good news is that the game is really very "miniatures neutral." That is, it is really easy to once you find an aesthetic you like, find a gang that thematically suits that aesthetic. Really, and truly.
Though that does mean that random suggestions of miniatures on our end might not prove particularly useful. Better to find out what sort of aesthetic she DOES like - whether GW miniatures or not - and work from there. This crowd are likely to do better at finding a good rule-set to match a selection of minis, than to guess what aesthetic a player they don't know might like.
And remember, really, ANY gang can be some, all, or mostly women. Escher isn't the only.
Does she prefer
More modern-realistic? Look at Cyberpunk minis of various sorts by various sculptors.
More post-Apocalyptic? There are a whole lot of Fallout miniatures available these days.
1990s cartoons? There is a skirmish game of Masters of the Universe, with He-Man, She-Ra, and Teela, and company.
And if you find a local-to-you who will 3D Print resin minis, there is a whole universe of printable miniatures on Thingiverse, Cults3D, and MyMiniFactory.
Plus, have a very brief browse of
I will be maintaining this first post to add in all the other sources that we have found for miniatures for Necromunda. To save a little time I'll pull together a categorized list of all the decent additional places for miniatures online. Just click on the bold words to go to the sites and see...
yaktribe.games
just to get an idea of the scope of alternatives.