My 1 yo mini schnauzer suddenly won't let anyone touch me, or me touch anyone else. She starts barking and jumping on us. Even if I put her in a separate room, she continues barking. Hugging REALLY sets her off. Sometimes she'll act like she's going to intercept my husband if he even walks toward me. (She does like him, although she is definitely my dog.) She adores my mother, but still gets upset if I hug or touch her. There have been no changes, nothing new or different. This cannot continue. Suggestions?