Halloweentown (film)/Fridge

Fridge Horror

 * As a witch with all her powers, Gwen has a lifespan of 1000+ years, yet in the first film she's bound and determined that all of her children are going to be regular humans. This means that she would stay relatively young while her children grew old and died, and she knows it. Maybe Marnie wasn't off the mark with her jab about Gwen getting tired of her kids and disowning them eventually after all.
 * But on the other hand, she's presumably aged fairly significantly her +10 years in the mortal world...right? Wouldn't people eventually notice if she didn't?
 * Not entirely sure if this is what the previous person was getting at, but maybe being in the mortal world (or possibly, not doing magic) makes her age like a mortal would. Also, maybe the reason she doesn't use magic very often is because she doesn't want to live for centuries more without her husband?
 * How old was Gwen when she met her husband? She crashed a Halloween party, but she could have been anywhere from late teens/early twenties to centuries old. Mayfly-December Romance, anyone? And if she actually does have a 1000+ years lifespan, then she knew going into it that her husband would die long before her, too.