The best home for Sydney is someplace where she's wanted by everyone. That's not your friends place, right now. I have family members who are highly alergic to cats. There is just no way the roomate would be happy living with a cat. If he moved out, I guess I'd reconsider. It wouldn't be fair to him or to Sydney to be put in that situation. I'm glad you're keeping her for now. Hopefully your friend will understand.