Sentence:  Usually she marked the few who did thank you , you did n't get that kind much in a place like this : and she played a little game with herself , seeing how downright rude she could act to the others , before they 'd take offense , <WSD>threaten</WSD> to call the manager . 
Meaning of the word marked with <WSD> tags:  to utter intentions of injury or punishment against:"He threatened me when I tried to call the police"