[aigel]

1) Dogs have different characters. One may be fine with little attention, others need more socializing to get to the same behavior. A dog that is from a line of strays may actually be less social than a dog that has been selected over many generations to be a family pet.

2) Sounds like you have a special situation with the old dog raising the young one. Not you. Now the companion is gone and the young dog feels lost.

3) You say this dog Lucy got the same treatment than your other ones. Really? I am pretty sure your past dogs got more attention growing up in a much smaller family.

Looks like you are on the right track. I hope you can turn this around for Lucy. If not, you should be analyzing your current situation carefully and reconsider getting another dog. It may be a good idea to go dog-less for a few years until the family is older and you can give a dog the proper care.

Good Luck!

George