Toni morrison's "recitatif" what does twyla mean when she says “ i was dismissed without anyone saying goodbye”?

Twyla realizes that she's the only one leading their conversation and after embarrasing herself by not knowing who Jimi Hendrix was she could sense that the conversation was over (since the other party had no interest whatsoever in keeping it going) therefore she decides to ask one final question involving their families in order to walk away from the conversation and the characters themselves.

type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.