Sentence:  Meanwhile Nanny Broome was recovering from her initial panic and seemed anxious to make up for any kudos she <WSD>might</WSD> have lost, by exerting her personality to the utmost. She took the policeman's helmet and placed it on a chair, and unfolded his tunic to shake it and fold it up again for him. 
Meaning of the word marked with <WSD> tags:  (may) Used to indicate possibility in past tense.