No, she is not showing any other behaviors other than this one. In fact Suzi loves people! anyone who comes over is her best friend, and she is not fearful one bit.
I think she likes certain feels of fabric that reminds her of being with her littermates? She certainly wanted to chew on my pants today, and was not going to quit, my sone picked her up and cuddled her, then she forgot all about the pant suckling . I just hate it because it ruins my clothes.