Girlfriend says she’s exhausted and needs to sleep but her snap score has gone up in increments of 2 over the course of 1.5 hours after she supposedly went to bed.

Am I being paranoid and looking too much in to this? She used to leave her phone laying on counters/tables etc and was an open book with her phone, but this past week it’s been attached to her hip the whole time and she won’t go anywhere in the house without it in her pocket.