Originally Posted by calico2222
I agree this is the right solution. Like everyone said, you aren't rehoming her...you are taking her back to what she thinks of as "home". Moving can be hard on cats. Some deal with it fine, others just never settle in. I think she will be much happier at your mom's. And, I doubt that it's because she loves your mom more...she probably just misses her favorite napping spot or hidey hole. She misses what she is used to.
And, I wouldn't worry too much about the puppy. Puppies are looking for their place in the pack, and cats have a way of putting them in their place REAL quick!
I know you will miss her, but you know she is going to a good home, and you are doing what will make her happiest.
Just remember, like we all do, that you are a great person and really good to your pets.