So sorry for your loss, DaveGnome.

I'm sure you will see the tip of Lily's tail disappearing around corners or hear her voice in the house for a while, and Molly may be a bit clingier than usual.

If you are so bold as to introduce another cat into the household to keep Molly company, don't be surprised if she suddenly turns into a termagant. We had a previously meek Siamese who became an utter terror after the old tomcat died and two kittens joined the family. After many years as the unterkatz, once she had the house to herself she had no intentions of sharing it!