Shaul Guerrero (in interviews) said that they wouldn't allow her to user her last name while "she sucked" and she would have to earn it over time if she wanted to use it.You can tell they don't see much in him when they don't give wrestlers their fathers last name (Orton, Blanchard, Snuka, Flair)
But there have been 2nd generation superstars who have been really good in the ring that weren't given their parents' name too. (Like Michael McGuillicutty)
I wonder if say, Carmella wanted to use her Dad's name, they would let her.....