She might want to investigate interstitial cystitis but in any case she absolutely must be seen by someone if she has not already done so as it could be any number of things.

It is possible your mother is not being treated with the proper antibiotics.
Also IC as shonster mentioned is a possibility. Many doctors over look this or don't believe it is an issue.

Does she have any flank pain? Having blood in the urine can also indicate a possible stone floating around which can cause more problems. Did any doctors do an ultrasound or CT scan to check for stones?

Hmmm ... I was wondering why people kept referring to me as 'suckers' so I did a bit of searching around and it seems that every time you type 'a' followed by 's' followed by 's' again (not necessarily in the same word) the word 'suckers' will come up, presumably because somoen in their superior wisdom thought we were trying to type A-S-S!

Let's try it: As soon as she woke up, she was so cold!

Dang, it didn't work (did it?)

WOW!!!
That is interesting you might want to ask a moderator about that...sorry I'm not calling names!!!

I know we are of topic but this is strange.