District of Columbia  |  Employment Law

My employer planned to take her employees on a fully paid cruise trip at the end of this year. I quit my job 2 weeks ago and now my employer told me that I am financially responsible to pay her for the cruise. I accepted her offer on going to the trip about 2-3 months ago and she did not disclose that I will be responsible if I were to quit my job. I do not wish to go on the trip anymore since it is a company outing. Am I legally responsible to pay her for the cruise? Thanks.