Just wanted to say thanks for all your kind words. Feel a bit better today - went to meet my Mum and Dad for lunch. Mum was a bit tearful - she was the one who walked Tiggy (Mum was diagnosed with Rheumatoid Arthritis earlier this year, and walking the dog kept her active - she only said recently that Tiggy seemed to "know" Mum wasn't able to go as fast and she didn't pull any more). It's her I feel for most.
Thanks ladies, it was lovely to read your kind comments.