I think some can not be changed,I say that before Stella (I posted a picture some time ago) passed away,for some reason she sat at the door till I got home.Sitting on the couch beside me,one paw on my shoulder,following me EVERYWHERE all the time.We have the other two dogs still,but it was all about me.(not being egotistic here).Some dogs are so focused on one person some have no idea. To think when her time came,she had no hesitation getting in the truck with me ,and not even knowing where she going,just with me.Sorry for getting off topic a bit,but I still miss her everyday.Hopefully something will work out for you.