My cats and fosters are all indoor only. I won't adopt my fosters to anyone who plans on letting them outside at all. It makes me extremely uncomfortable. It just takes one accident and your cat could be gone forever. Way too many dangers are out there - cars, dogs, other animals, diseases, bad people, etc etc etc.

I provide ample scratching posts, cat trees, and toys galore indoors and they are all very content. They also love to sit in front of the fish tank or sit in the window and watch the birds outside. So I really don't see them as "missing" anything by not going outdoors.

Most kittens and young cats have tons of energy and run around crazy. Instead of letting her outside, maybe you can get some interactive toys or a cat tree if you don't already have one?