I feel so bad for you Kathryn. Your going through lots of changes in you
life at this time so it's probably a combination of everything that's going
on. Of course your hurting. You just rehomed a beloved pet. I don't believe
you have to be attached at the hip with a pet to grieve it when it's no 
longer there. Paris was a big part of you life so of course you'll miss her
terribly but you did find a beatiful loving home for her. It must have
been one of the hardest things you have ever done so what your feeling
is all normal. We never know how much we love something until we no
longer have it

 Be strong and know in your heart it was something you
needed to do. 
Hugs,