gigglepin I really feel for you, and totally understand your worries and frustration and the lack of care, and speed of diagnosis...
Anything to do with the liver tends to look like it happens quick. What I mean is, you can have a problem for a long time without knowing then suddenly it all goes tits up and you've got someone who's truly suffering on your hands and needs speedy help.
She needs diagnosis, so however hard it is, get her to that appointment. Taxi, you taking a day off, I know its hard but you need that diagnosis so that the help and support can be able to start... I've been through this twice and I totally get the furstration and anger, but the reality is everyone is doing what they can do in the circumstances, without diagnosis, the risk of prescribing something incorrect is too great.
Anti-sickness drugs are a strange entity, they always made me sick, and most other people I've known to take them. My neighbour reacted badly to them (he did have late stage melignant melenoma in the liver) and I'm sure between McMillan and the hospital etc they found a solution to get him pain relief without the sickness. I will ask my friend as I'm afraid its all rather fuggy.
Anger is completely understandable, and the general pace of cancer treatment in the UK is actually not bad at all, unfortunately anything to do with the liver seems to happen quick... nobody wants your MIL to suffer, and it may require some 'on the ball' pushing from you and the rest of the family, but finding the right drugs to relieve the suffering can be quite difficult.
I have experience the same anger many times gigglepin but my anger has to be directed at the bloody illness more than anything, as a few of my family work in cancer care and are utterly utterly dedicated to, if not curing, relieving suffering. Its a bastard bitch cunt of an illness, and I totally feel your pain.
There are happy endings, of course, there is always hope. But if you can do anything for your MIL, and you are limited in your options, its to be on the ball, and y'know, in the worst case scenario of diagnosis, become her muse, news, joy, and emotional relief. Its a heavy burden but I am convinced that its more affective than any drug.
I wish for your MIL a cure, but being a realist, I wish you strength, you are obviously a caring DIL and rather than get angry at the world, keep on top of inconsistencies and provide a little brightness to a truly dark time.
Sorry if over dramatic and negative, not my intention at all, I really truly wish you strength.
By the way, I ended up moving in with my MIL/FIL when my eldest was a week old because I was not happy with the level of care MIL was getting. There was frustration, but no anger, as BIL/DH/FIL etc were doing the best they could and McMillan (being a charity) couldn't be there 24/7... its not a feminist rant by the way, the men did a lot right... but I needed to make sure that everything that was frustrating me was met, by me.
Sorry for the long post gigglepin feel free to PM me anytime. I've no medical training or experience, but certainly know people who have. I truly hope your MIL has a happy ending, and I honestly believe that you can help with that whether she's cured or not. xxx