I learned from this thread about a bra not really being helpful. I thought they did help keep your breasts from sagging sooner. I suppose everything can be good and can also be bad for you. Who knew?
I get the impression that your mother’s intention for telling you to wear the bra was in regards to the workers ogling her daughter. She wanted to avoid whatever was upsetting to her about that scenario.
By age 18, though, you are making your own choices as a woman. I’d think some conversation has come up in the past regarding modesty and unwanted male attention.
I’m not sure why she would hurl some hurtful words toward you about it. Was there some issue about this in the past?
There may be some deeper struggle with you are who you want to be and she is who she is.
My opinion on ‘to bra or not to bra’ is I cover up when I don’t want that attention and flaunt it when I do.