are you giving skye the same amount of attention your giving tink??? It sounds like a jelousy thing like, say your mom had another baby and the baby is getting alot of attention and now the baby want to go anywhere and eveywhere and it like you get jelous. I think it just a jelousy thing, even though they like each other skye is still hurt another 4 leg animal came in the house. My dog that past away 4 year ok did the same thing with t.j. they will grow to love each other and skye will get use to her. no worries just give lots of love to skye and make sure she isn't scratching tink