Sentence:  — What?! Why did you come HERE then? You should be at a hospital! / — A gentleman never <WSD>stands</WSD> a lady <WSD>up</WSD>. 
Meaning of the word marked with <WSD> tags:  ('''stand someone up''') To avoid a prearranged meeting, "especially" a date, with (a person) without prior notification; to jilt or shirk.