Katie randomly asked me today if the name "Libby" is short for something.
"Well, my college roommate's name was Libi, " I told her, "and it was short for Elizabeth."
"Ms. Mary's daughter is called Libby, but it's short for Liberty," Katie remembered.
"People can make a nickname from anything," I said.
"Yeah," Katie said, "Like the way Emily calls me Butt-Munch. You can shorten any name to a nickname."