I Live in C.A. and want to leave my Sulcata Big Bertha outside at night but I don't have a heated outside home... What temp dose it have to be outside for her to be ok... she is 2.8LB 8 ¾ inches she has a dog house that I can close at night... I have been bringing her inside at night but it is getting hotter and hotter with each passing day and it would be better for her if she can just go out and not be carried in and out every day.