Thank you all for your wonderful support, there was one time when I was there when she started crying and continually saying "Please stop it" I kept asking her if she was in pain but she wouldnt respond, it was almost like she was having a bad dream, and then the next second she was asleep again.
It was quite distressing to see and at that moment I felt like her passing on would be ther best for her she would be at peace and pain free.