On December 18th, she passed away. She does not seem to have suffered, as she was happy and cuddly last night when we went to bed. She is in the freezer right now, and will be buried in the front yard under a rosemary bush, which she would have liked because it has a smell and is food-related. As far as we can tell she was born around April 20th, which would make her 1 year and 9 months old, and the average lifespan for a pet rat is 2 years. She had a good run. She will be missed.
Out seems to be doing fine. We have moved her to the smaller cage, and will probably be moving her into the living room so she can interact with us more through the day, which she will need now that she is by herself. We considered getting another little girl for her to bond with, and maybe naming her In or Down, but decided that with the dog and cat we have our hands plenty full.
Goodbye, my little girl. Mama loves you.