All right, i never thought i would log on this part of the forums, but yesterday, as we were swimming a very neonish colored parakeet flew into our pool, And kept trying to drink (was thirsty!) and after awhile (there was a storm coming) I caught her and put her in my old rat cage, the only thing we have, and gave it hamster food (we took out the Things that weren't seed, and put water in a locking bowl. It ate Like a beast yesterday and this morning. I have some very soft Forest noises going on, i read that silence means there are predators by, and it makes them stressed. Anything we can do? were trying to find the owner and if we don't by Friday, (payday) we will have to buy a small bird cage. I'm thinking today we will go get some bird seed and things. need suggestions please

Ps: shes very pretty, yellow top, green bottom.
To make it easier
1.Is this cage acceptable?
http://www.petco.com/product/104557/PETCO-Tear-Shaped-Parrot-Habitat.aspx2. Can she live alone? were stretching it with one as it is.
3. What things does it need? Mirrors, ladders, ropes?
4. should i keep a blanket sourounding all but one side all day so shes not so scared? (Remember we found her scared outside).
5. Keep water in a bowl? I have rats so i don't know how to get them water

6. Play soft nature sounds through the day?