I know gearslash had some women's outerwear the other night, just wait for it to come up again and vote for it so you can buy it. I think it was either Nikita or Holden, but I remember thinking that if I was a girl i'd buy it cuz it looked nice haha
As for pants i would suggest going into a place and seeing those with her in person. I recently bought my finace a whole new setup boots, board, clothes, etc. And as for pants since there is no joke so many brands, styles, and fits you might be better off getting those in person.
Jackets, always fo a size smaller because their actual size might be too big. My girl wears a small but in every jacket she tried small was huge so we ended up going with XS. Just a thought, good luck man.