Not very many women are going to want to change their clothing style, let alone start carrying on-body with IWB holsters on a good belt, or belly-band type rigs.
^Keeping this in mind^
I would try and push her towards better purse carry options, such as ones with cross-body straps. I see a lot of 'carry purses' that are designed to be slung over one shoulder, rather than cross body. You may need to search a little and find something that will work good and be well made, also will be dependent on what SHE WANTS.
A lot of women purse carry, yes I know this goes against just about every 'tactical guru' on the internet. But the reality is, more women carry today, than 10, 15, or 20 years ago. ALSO: women tend to dress in the LEAST-CONDUCIVE way for on-body concealed carry. Therefore, the vast majority of women will CHOOSE to purse carry, over body-carry.
Just my 2 cents. I've spent lots of money on belly-bands galore, 'flash bang' (bra holster), minimalist belt holsters, pocket holsters (for LCP), etc... Few women are going to change their whole wardrobe to carry a handgun, the vast majority will pick a purse to carry in. Not to mention comfort, most guys will forgo a lil comfort to carry, women will NOT...
I got my other-half to choose a high-quality/durable/cross-body/metal-wire-reinforced-strap style purse...
She carries a full size 9mm, and she shoots it well. Sar CM9 Gen2 (she picked it out and loves it). Which she has tried the smaller things, snub-nosed and LCP but really, really didn't like them. She enjoys taking her handgun to the range and shooting, rather than taking something I 'forced' her into using.
If you push too much, she may give up the whole idea of CC. I believe a women can carry safely/responsibly in a purse and be far better off, than if they didn't carry at all.
--- Also if they are 'lazy' with leaving the purse laying around, they will need to end this behavior once they start carrying. Especially around kids. A shopping cart is not a purse-holder, when you're at a friends house, the floor or couch is not a good place to toss your gun/purse. Some BEHAVIOR will need, NEED to change.
Best of luck to ya