My wife has ovarian cancer. I feel totally helpless and don't know what to do or where to turn

My wife has this ovarian cancer .they wanted to give her a radical hystorectomy. But just closed her bk up. Its spread through her pelvis  abdomen  and is terminal ....im assuming this is stage 4 . She has a lot.   Of fluid gather in her tummy . She got that drained  every month or so.  She was getting chemo ..paclotaxin and carboplatin.   But they have put a permanent drain in to her now. And are only draining it every second day ... it seems to have made her worse .  Breathlesness. Finds it hard to walk  . And not a long distance .   Now they have stopped her chemo but not said why or if there going to start treatment again ... this is more than a year now.  Its killing me me watching my wife deteriate in front of me ...and im unable to help her ...  my stress levels are through the roof .   How do i help her when i cant do anything to help. I feel helpless.   Im so angry that no one tells me anything. At nhs.. she just sleeps constantly.  Doesnt eat much.   She is not on any pain relief.   . I dont know what to do or were to turn .