Purse carry should always be a very last resort. She should always try to carry on her as much as possible (I'm sure you can find lots of threads discussing/debating this).
That gun is so small she shouldn't have a hard time carrying it on her (had one myself for a bit). An IWB holster at the back of the hip should probably work. That's how I carried it (and now my current .380).
I've got some hips on me too, but with it being so small it doesn't stick much above (or below) the waistband so I never had issues with it really jabbing into me, or sticking out at funny angles, etc.
I personally don't really like carrying in the front as it just feels weird to me. Let her experiment with what feels good for her, try different holsters, etc.