“Selection” is maybe the limiting criterion. Lots of brands seem to do one or two okay women’s cuts, these days, but no one seems to have more than a couple of options.
Meanwhile, obviously all jeans are more or less gender agnostic in principle, but how well they work in practice depends completely on body type. Around how is your partner shaped? If they’re big in the hips and don’t fit well into standard men’s jeans, the TCB Norma could be a really good option; I’ve also seen curvier women friends make ‘90s Cane’s work well.