ok so recently i just saved a res from possibly dieing

here is the story... i was on my way back from new braunfels and was passing by a pond when i noticed this guy with a tank so i drove up by the pond and started talking to this guy and he had just move into a duplex in new braunfels and didn't have room for his res so he was gonna dump it in the pond even though its been in captivity its whole life and he was just gonna leave the 30 gallon out by the street and hoped some1 would pick it up so i convinced him it would be better off with me and i could take really good care of it (since i have this site) so i got a free res and 30 gallon tank now i believe its a female because the nails are really long and her tail is really fat and not long and has a cloaca close to here shell not by the tip or her tail so i believe its a female its about 5-6 inches long right now shes in the 30 gallon she was in original but she is only going to be in there for about half of 2day since im finishing setting up my 80gallon pond that im going to put her in the only concern i have is that it might be pyramiding what do yall think here is a pic
and also im concerned about a part of her shell it looks a little cracked and where its cracked it has some blueish green type of color stuff on here is a pic and u can see the crack and the discoloration on the shell where the crack is the picture is with the screen on because i wanted her to be able to bask all she wanted since once i brought her home put her in the tank she pretty much basked until night time shes not shy one bit to
also 2 other things i was wondering because my other 2 baby res sleep in the water but i noticed this one was sleeping on the basking dock and was wondering if it was normal and also any good names y'all think i should name her i would appreciate it
