To get a UK settlement visa, I think your mother-in-law needs to satisfy the five requirements in immigration rule 317. In particuar: 317(i)(e) parent or grandparent under the age of 65 if living alone outside the United Kingdom in the most exceptional compassionate circumstances and mainly dependen...

Dear Stuart, I'm very sorry indeed to read of your son's death. I'm not an immigration expert, but it seems to me that there may be two possibilities for your son's partner to apply to stay in the UK with your granddaughter: 1. She can apply for further leave to remain in the UK using form FLR(O). T...