Thanks all, so much, for the replies.
I absolutely agree she needs something larger, which is why we want to go the pond route since we most certainly don't have room for a 100+ gallon aquarium in the house.
These turtles are indigenous to where we live. I see them out when I'm fishing all the time. From what I can understand about hibernation and sliders it seems that as long as our pond is at least 3' deep and as long as she has a nice, thick layer of sand/mud/substrate to bury in over the winter she should be fine.
My main concern is that she won't be able to adapt to having to hibernate after not having to do it. Would it be a shock? Would she have forgotten how to hibernate? I wouldn't think so, but I'd like to have more to go on than what I hypothesize is correct.
As for wintering her in the house...well, space becomes an issue. We don't really have a place inside that's big enough to hold a preformed pond or holding tank for her. There's always the garage, but that's also my art studio and I use a lot of stuff that's bad for people to breathe, nevermind turtles. I do have fairly good ventilation (have to unless I want to die) but again, the space is an issue. I could probably make one fit somewhere but it'd be cramped and electrical outlets down there are valuable real estate
Our house isn't tiny but we do share it with a large computer collection of my husband's, tons of books, 5 cats, two dogs and a snake

We're crowded, I tell ya!
