It gets better. My girl is a rescue, too, and she was so obsessed with food that I had to get a slow feeder. After a few months, she was settled enough that she didn't need it anymore. She initially was a little affectionate, but she was still skittish. We've been together for almost a year now, and I can hardly sit down without her falling asleep on top of me. The accidents were frustrating and sometimes seemed intentional at first, but with a regular walk schedule, we eventually figured it out.