Her Name.
It must be a pain in the ass having pretentious parents that give you a screwed up spelling to one of the most common names there are. Now, not only do you have to hear "Is that with a K or a C?", you have to actually spell the whole name out every time you talk to anyone.
It's CATHERINE. It's not really supposed to be spelled with a K, and it's certainly not supposed to have a Y.