AIBU to think that this isn't a reasonable reaction at all- a girl I work with (well' she's 18-19 so I guess she's technically a young woman) got into a heated discussion with a manager, she was really upset and then she started sobbing and hitting her head against the wall really hard. That's not normal is it? Why would she do that? I tried to talk to her but then she started crying again and hid in the toilets and I didn't want to make things worse!