I’m about that and I can easily WALK a good distance in the middle of the day when it’s a hot 40+ degrees and not faint. I’d suggest she’s unfit because all she’s been doing has been staying around home and ‘relaxing’, not doing any form of exercise (even body weight exercises is better than doing nowt!) then she’s goes for a ride on a warm day, that’s why she’s fainted.
She needs to move more. Rather than lying on the hammock, do a small body weight workout - not only will that help her feel better physically but it will also help her mentally and her anxiety that she has been mentioning recently.
The whole Anthropology issue needs to be addressed by her properly. NOT an Instagram story that has now disappeared but a full post on her grid, where it remains, so her ‘audience’ can see her stance on it. Then she needs to delete all her associated content with them OFF her grid and her stories. Until she does that, whatever she says is just lip service to make it look like she’s taken a stance.