Thank you all for your support and views.
we had to take mom in to the see her doctor so she can handle losing Dolly. They made her talk to 3 shrinks because she told the doctor about not wanting to live. they also gave her something to make her calmer.
After the doctors we went to see Dolly at the vet, Dad took lots of picture of them together and mom was ok with letting them put Dolly to sleep. ( Rest-N-Peace Dolly)
Next week mom as apointment to see the shrink.