jack russell behavior

(Muskegon, Michigan)

My husband bought my jack Russell when she was 4 weeks old. She was so tiny and cute. However, I herd that if they are taken from their mothers before 6 weeks, then they will have behavior problems. Is this true? It seems to be apparent with our female. When we began pottying her, it was late fall. She was so tiny, that she wouldn't go outside. She would stand between your legs and do nothing. As she got older, the behavior got worse, she wouldn't pee outside. We put her in her cage at night, or when we went to work, but she would become frustrated and go to the bathroom inside her cage, and destroy her pee pads. Taking her for walks was awful. She wouldn't walk a straight line, but rather wanting to run out in traffic, or into peoples yards. She's gotten off her leash several times, chewed up our furniture in our old house, and peed and pooped all over the carpet. In our new house, she has destroyed our couch, pees on it when shes in heat, won't go to the bathroom outside, but waits to come in, and then pees and poops on the living room hard wood floors. We play with her, and discipline her, but it seems like not enough. What else can we do? She won't sit through doggy obedient classes, her attention span is short.