i just got a new jack russell puppy, she is 12 weeks old. when i first got her she was very nervous and scared which i didnt worry much about because of a new place and everything well i have had her for almost a week now and she just hides in corners and lays around and sleeps. i was wondering if she still needs time to adjust to her new surroundings or is there something i can do to make her feel more comfortable? i pet her and spend time with her all day, but her behavior is not changing. if anyone has any advice it would be very much appreciated! thanks.