What is the deal with Paper Products...

So Abby latest obsession is with paper products. While she has long had an affinity for magazine pages and sheets of paper, her taste in objects to eat has now turned an obsession with all paper products - paper, paper towels, napkins, toilet paper, etc. Last night, we had dinner at Friday's with Web and she started to eat one of the napkins. I took it away from her and she screamed bloody murder in the middle of the restaurant. IT'S JUST PAPER!!! Get over it. Then this morning she was playing in her room and I went to brush my teeth. When I came back, she had found a paper towel and was eating that. I don't get it and I just really hope that we make a swift exit out of this phase.