How can I reassure my Pug that no-one is going to take her puppy away

I rescued a Pug just before last Christmas, she was in a awful state it was obvious that she had not long had puppies, she was leaking milk and bleeding from her 'foof' she also had other health issues, no-one knows what happened to her puppies but it looks like they may have died, when I got her it was obvious that she had never been in a home before but with love and attention she has become a happy healthy Pug.


A couple of weeks ago I bought a Pug puppy (from a reputable breeder, cost me a fortune) since I got the pup, Princess has become very possessive over him, she wont let him out of her sight and gets distressed and anxious if anyone but me touches the pup , tonight she growled at my husband when he picked the puppy up.


I know that as the puppy gets bigger and more independent she will 'let go' like all mums have to, but until then how do I reassure her that no-one is going take her puppy from her.