I had a mulit-enter stamp which expired with my extension. I renewed 1 week before it expired. They extended my new visa and I had to gi back Nov 7 to finalize. I traveled during that month so I had to buy a single entey stamp. Now I can get a multi-entry that expires Nov 7, 2026.
Then she will have to get an appointment at the US Embassy in Bangkok which may take another 6 to 12 months. The USCIS paperwork is only the beginning.