Dear Rose76,
What a really heartbreaking situation!
I have struggled with sleep problems all of my adult life. I have never been on the medicine you mentioned, but was once prescribed Ambien. Right now I am on Trazadone and it helps me a lot. I hope you find something that helps you. Not getting enough sleep is brutal especially when it is a chronic situation. Wish I knew what to say that would help.
Sincerely yours, Yao Wen