i have 2 questions heres the first one about one of my dogs

[TIGGERLIT]

can anyone help or have any ideas.
i have 3 dogs but only have probs with one.
she is a 8 year old samoyed and 2 days before xmas we lost our other samoyed suddenly.
ever since then everytime we go to my dads house shes on edge and starts houling her head off no matter what you do she dosent stop. my dad has a samoyed which used to be mine but my dad took him on about 6 years ago as the current sammie and him didnt get on and would fight, i have noticed also that my sammie keeps winding my dads one up by keep walking past him.
normally we could get by this prob but im loosing my home and have to move in to my dads. i dont want to rehome her, so i was wondering if there was any remidies that are quite cheap that i could try. as i havent got any money one of the reasons im losing my home.
the other strange thing that has happened is that last night we went to my partners nans house who has no dogs and my sammie has been there before, started to howl and be on edge there so now its puzzling me. at the weekend we are going to go round a freinds house whare my sammie loves to go and if had her own way would live there, to see if she starts again.
sorry its long winded but thought the more detail the more help i get.
thanks