Tending to mortify; affected by, or having symptoms of, mortification; as, a mortifying wound; mortifying flesh
causing to feel shame or chagrin or vexation; "the embarrassing moment when she found her petticoat down around her ankles"; "it was mortifying to know he had heard every word"
If you say that something is mortifying, you mean that it makes you feel extremely ashamed or embarrassed. She felt it would be utterly mortifying to be seen in such company as his by anyone