Oh no zoomom. I am so so sorry

(((HUGS)))
I had never heard of Twirling Disease. Thank you for mentioning it, and thank you P&R for some info on it.Knowledge is power, and knowing about dif diseases and preventatives may very well help someone in the future.
Again zoomom, I am so sorry for your loss.
I'm really not sure how long you should wait before getting your female a new friend. Maybe play it by ear, spend lots of time with her and let her grieve her friend for a bit? If she starts acting depressed and lonely, then I would get her a friend.
R I P little Paco^