Just a quick update on Pixie, or Peanuts as she's now known. My friend found it too hard to keep her, as she has 10 cats. So she found her a wonderful home with an older lady who can give Pixie/Peanuts all the attention she needs.
My friend is still having mixed feelings as she really fell for the little dog, but she's happy that at least Pixie/Peanuts has gone to a good home and by all accounts has settled in very nicely with her new chum, another terrier type boy, and is very happy.
Thank you everyone for all your help.