
Perhaps get a cheap / older DSLR or point and shoot. They’re pretty cheap for older ones and you can still get decent quality photos by setting everything to auto. Maybe also take some time afterwards to go through and edit a photo or two with her
Places you can look for cameras are: ebay, craisgslist, (shop)goodwill, facebook marketplace, estate/garage sales, etc
People routinely use worse options because of familiarity