गूफ़

When Mary is leaving for Europe after stopping at her father's house, she rushes away without her satchel containing all her belongings. She boards the carriage without it, and Jim, who accompanies her outside, is not carrying it either.

People sometimes do forget to take their bags when leaving for a trip. Also, as Constance wanted Mary to come with her, and she and her husband are quite wealthy, they would simply buy Mary a contemporary continental wardrobe.