Huge-headed girl: Mackenzie Lintz

I watch Under the Dome and one of the main characters has this HUGE head: Lintz. She looks like she has waterhead. Isn't that dangerous? Her neck can be hurting.
And her given name? Mackenzie? Isn't that a family name from Ireland? :)
In my country, we celebrate names throughout the year and it is regulated what name a person can wear. We can't name people after dogs (Rusty? Really?) or out of thy sky names (Macaualalay Culkin? Was her mother high? :D )