Sorry Carol I agree with the others as well. Your pup is now a member of your family as are your grandchildren. You need to tell your daughter that you and the pup are a package. If she tries the emotional blackmail (as this is what I think it is) tell her that as her mother you are disappointed in her attitude and that you love your grand children to bits but you also love your pup. If she needs you like she says she will she will have to back down!
Lots of love
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Lots of love
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