Answer the question about text:

I was at the beach this eve , and a woman was packing up two small children , getting ready to leave . She walked to the waters edge , and tossed three used diapers into the water . I stood there with my baby , absolutely mortified that she would do such a thing . Other onlookers were just as shocked , and I suddenly felt very embarrassed for parents and babies everywhere .

What may be the reason I was so mortified by the woman ?
She had no concern for the environment or the swimmers .