Thanks to all for advice and replies.
Unfortunately we lost Betty on 1st February. We were devastated but the courage and dignity with which our little angel left us strengthened our hearts.
Betty gave us a memorable last week - we spent the days going to her favourite places and doing her favourite things. We were left with no option on the Friday - she had not eaten and had started to lose her dignity. I believe she rallied at the end for our sake. We had a lovely last walk and she stood brave and proud in the surgery. She died in our arms and although a light went out in our lives she still shines in our hearts.
The pain does fade but the treasured memories do not.
Best of health and luck to all
Betty's Dad