Sure, it was a summer of monsters, but it was a summer of confusion just as much.
When Irene wasn't occupied with the weight of her own life or that of the others on her shoulders, she was becoming insecure about things she hadn't considered.
Of course, anyone going into a life where they would pretend to be the gender in which they were not would run across issues eventually. But life had been happening much more quickly than she remembered.
Perhaps her past life was so slow that her life now felt fast.
Regardless, she was running into the problem of hiding herself when she spent all of her time around men. The days were hot, and she wore baggy tunics with long sleeves. On the off chance that her clothing was torn, she wore something underneath to hide for a bit longer.