"My Sister going round in circles"

In 2006 became very ill & was eventually diagnosed with Transverse Myelitis. She has very bravely lived with this condition. In the last 15 months she has become extremely ill. Not the Myelitis. In this time her gall bladder has been removed to no avail of symptoms. She has been sent round what feels like almost every hospital dept. In doing so she to wait the allotted 12 week appointment slot then the 12 week waiting list for tests. When the consultant doesn't come up with anything she is referred on to someone & the waiting begins again. The last consultant was sending her to GYN after they couldn't find cause. She's been there 3 times I called a secretary to find out why & found out there is no referral to GYN on her notes. . All the while this is happening  she's in extreme pain whilst her body is falling apart. She can't eat, uses a catheter, bowel preps, her bmi 18 she's had 14 antibiotics this year alone many A& E visits. I spoke to our GP to ask what happens next & his reply was he just doesn't know. Well I'm sorry that's just not good enough! I think she will die if she catches a winter infection she has nothing left to fight it with. I will not let this happen whilst I have breath in my body. I hope someone can help.