The Last Night

THe last few days have been very interesting. When I'm gone for a while, I dont keep an eye on my turtle, I get home and I see her laying there like she was dead. I pick her up, look at her eyes, they're white... or so ive been thinking... Then I picked her up today and I saw the white part, but I also saw a little bit of her brown eyes. SO ive been yelling at dad and crying to other people that something needs to be done for the past few days... turns out she was just sleeping. I dont know how long turtles should sleep, I know your not allowed to let them hibernate. I dont know if she was tryna hibernate or tryna sleep. If you guys have any info on turtles, please let me know, because Ive had this turtle for about 4 weeks now and I'm keeping the poor thing in a wooden box because i have no money to get her an aquariam. SO if you know of something I could do for her like a diy please let me know, its killing me seeing her like this.... I just dont know what to do