My wife is an amputee and has had phantom pain for four days now?

My wife is an amputee and has had phantom pain for four days now. She is a very strong woman but she is in tears with the pain. She is taking Gabopenten but that does not help. She has been putting up with the pain for many years but this time it is lasting longer than it has before, Is there anything she can do to alleviate the pain?

Age: her age is 73
Female
Medications: Gabopenton, feoroset