Please don't tell me your surname is Vanilli....
Thats exactly what I thought when I read that!

But yeah back on topic...Honestly? I think it would be really cruel. Holly is lovely, (it reminds me of christmas ) but definitely scrap the Toledo. Remember kids are tactless and mean whether they intend to be or not, and batman is a show that has bridged the generation gap so they are possibly going to know the phrase. I got teased massively at school simply because my name rhymed with goanna, and it made my life hell until the end of primary school. And to think my mother didn't want to call me Charlotte because it rhymed with harlot...because kids know what a harlot is mum *rolls eyes*. Anyway my point is the same as Lilima said, this is a person, not the family pet or a sitcom character. Maybe you could get her a puppy or kitten when she's older and call it Toledo and they can have adventures and when they get in trouble you can yell "Holly, Toledo! What have you done now!" lol