Siberian kittens & cats in Albertville, Alabama

Naboo is very sweet. She has not been skittish until recently. She loves people and to be played with. She was very interested in outside. So, we would let her go outside and explore for a few minutes at a time. Recently, something happened while she was outside. She's now more skittish and will not use her litter box room - an outdoor closet that is air conditioned which she can access through a kitty door from inside the house. I have worked with her over the past month with treats and encouragement to use the litter box but any type of noise will deter her. I do not have space in my house to have a litter box inside that can also be out of the way. I have two young boys, one who is beginning to crawl. We just cannot afford her regression at this point. I'm certain she will thrive in an environment where she can have her box indoors and not dodging a toddler all day. Adoption comes with box, litter, beds, toys, food, remaining flea doses, water fountain, treats.