My mom showing her Breasts in public. im really worrying?

It happens when im about ages of 13 or 14. one day our family go to tour in a train in unreserved coach. so the train compartment is little bit crowd. in fact my mom having habit of not wearing bra inside her blouse. on travel she wants to change her blouse due to unfit new blouse. she without shame or fear of strangers and other passengers in the same compartment she removed her blouse and flashed her naked breast. many people including men had seen my moms breasts on the go. it also happened when we bathing in public river when so many people there her full breasts exposed while bathing and changing clothes. it really irritating my mind now itself and now im 24 old. whwt can i do please help