I am opposed to crate training anyway but I would discourage it with a dog of Daisy's age that you have rescued. A crate is too much like a cage and isn't she already sleeping in bed with you? To change that now would be wrong in my opinion. I think you need to keep working at it with the constant supervision and reward. You can teach an old dog new trickes, it just takes a little longer. I vote for giving her a longer chance.
