My DD knows very well the routine, she even tells me sometimes when she is ready for her bath or nig-night. I do her bath and dressing and husband, if he is home in time, does brushing the teeth & reading with her. Although, the reading has changed as well, she does not like to sit in the chair and read with you anymore, she insists on reading by herself on the floor or footstool. She even will point to the crib and say nig-night when she is ready to go to bed.
Hopefully it will not happen again tonight, but if it does, the husband is on duty and he is going to try wi/wo. And hopefully it is only a milestone she is going through.