This is just my opinion, but I think the right foot may be lost up to the color line leaving a stump at the ankle. The footpads on the left are going to be damaged, but soaking daily in betadine or chlorhexidene may help to minimize infection. When a foot is lost there will need to be something placed on the stump for awhile to pad it. I haven’t dealt with frostbite on this level, but it takes several weeks to a month before the foot may come off. Antibiotics would be a good idea to use. So sorry that she is probably in pain.