Potty Training an Adult Dog?

I adopted a Bichon-Poo a year ago. She was 1 1/2 then. They said she was potty trained. She has been going to the bathroom in my house ever since. She does not like the be alone ever. I've tried the puppy pads. She won't use them. I've tried the crate and she pees in the bed in the crate. It's starting to ruin my wood floors. I feel my only choice is to find another family for her. I'm a single mother of soon to be two. I work full time. I can't take her outside very two hours. Any suggestions?

By Stephanie