Hong Kong’s embattled leader has opened up to her political allies at a private dinner gathering on Friday night, sources said, speaking candidly about her difficulties amid the extradition bill crisis and making an enigmatic remark that whether she could meet them again next year would depend on their support.Three sources said Chief Executive Carrie Lam Cheng Yuet-ngor was emotional as she spoke to members of the Hong Kong Construction Association, telling them she was facing a tough time for…