Making a big deal about using F lav I would not find strange - indeed there are few flights where at least one person in Y does not feel entitled to use the F lav. Also several people here feel entitled to use the F overhead bins too. SO I would not call that strange but very usual. Making a big deal of stuff that dont matter is also very frequently seen in planes too.

As for the clippings - maybe we just need to understand more; she was tearing the pages or cutting them? Maybe she was in some one man protest against CO? Maybe she was displeased there was no meal at meal time. Maybe she has heard about the merger. Maybe she was on the 9th leg of a marathon mileage run. Maybe she was just put through one of those new whole body scanners. Maybe she thought OP was the crazy one and wanted to chat him up so thought she better behave crazy too. Who knows what was going on in her head. So much goes on in airplanes that can turn a sane man crazy. That said I have certainly seen stranger...