My husband and I adopted an ex-racer from a rescue kennel a few weeks ago. Shes really gentle, great on the lead, clean in the house and has no interest in the furniture or our belongings so we very rarely say 'no' to her but she is still very nervous. She won't go in the lounge, kitchen, spare room, my husband's office or the garden (after the neighbors had a party) and mostly sticks to the master bedroom even though I refuse to feed her in there. She has beds all over the house and might spend time with me in my office in the morning but if we get post then she dashes straight up the stairs and won't come back down for hours.
If my husband enters the room she runs away to her bed and sits on it with her head down. He's trying to win her over with treats which she didn't accept to start with but she will now take high value items from his hand. She loves snuffling around the local woods so we take her out for 2-3 hours per day split over two walks and we take turns holding the lead. We also take turns filling her food bowl but if I'm not in the room then she just picks at it and paces around.
Is there anything else we can do to raise her confidence in the house and get her to interact/bond with us more? It's really disheartening that she wants to hide away all the time and we worry that she's stressed. My husband is upset because he thinks she doesn't like him but TBH I'm not sure she 100% trusts either of us yet.