If the body is deciding not to -for whatever reasons- autolyze or absorb, or in some way dissolve these
encapsulations, if we can call them that, that says to me there is
a non-physical component to them that is maintaining them.
The first place to look for "why" (again, in my view) is in the thought-system of the person in question. And what's called the field, which includes the body. This is not to, as they say, "blame the victim", but to simply look at the situation impersonally with an eye to resolving it.
There is a brilliant kind of energetic shifting that might help, in these cases. rawmr, please do a search on "The Truth is Funny" with Colette Stefan, and look at the radio show associated with the website. This is a call-in show, with no outlay required, other than making a call. . .
I don't want to flood the board with a lot of information that appears off-topic to water fasting.
I honestly would try the shifting with her, before I'd consider surgery.