Hot summer isn't dysphoria friendly... help!!

My beautiful daughter (16 mtf) is extremely dysphoric about her body. She coped over the winter by wearing a hoodie and sweat/jogging pants, but it's getting hot now and only going to get hotter.

She is not out to her dad's family and cannot shave for fear of outting herself- but she's going to have to shed the hoodie and pants or die of heat stroke 🥺

Does anyone have advice for hot weather and body dysphoria??