As in, I mean she luuuuuvs her pillow. I think the word I'm looking for is... well, humping. Although her senior barista tactfully refers to it as "making friends with her pillow."
This pillow-relationship seems to have entered a new phase this week, however. As the week progressed, I started to notice that her threadbare old pillowcase was starting to collect little rips. I threw it out, only to have the phenomenon happen a second time with another old pillowcase. So I tossed that one too, and this morning pulled out one from the JoyParents' regular pillowcase rotation.
Here's what she did to her parents' pillowcase during naptime today:

Sometimes love really hurts!
We're going to try a flannel pillowcase tonight.
Wish us luck.