The same thing happened with Tango, My mom told me that she had a dream last night about a toller mix puppy with a black face. The next day my moms chiropractor told her that Dez was pregnant with Toller/bc puppies when they were born we went to see them a few hours after she had given birth and as soon as my mom saw Tango she said that's the puppy that was in her dream and it's name was Tango so that's how she got her name, I had a dream very similar to hers the same night but Tango was a bit older in my dream. good luck trying to convince your mom.