Hi, you really do sound as if you are at th end of your tether!

You said you tried crate training her when she ws little and the crate was too big... have you tried it since with a crate the right size?
You will need to go back to basics and train her as if she was a puppy.. it will be much easier taking her out too often rather than her having an accident!

This page is really good for toilet training: House Training your Puppy

and if you are crate training and she does not pee putside, put her back in.
take her out on a lead so she doesn't get the chance to play or she will have fun and forget to pee!

good luck and some more members will be on shortly with more advice i assume lol

x