Dear Queenie,
When my daughter got married, someone stole money from some of the bridesmaids’ purses during the reception.
Queenie, are we, the bride’s parents, responsible for their loss?—Father of the bride
Dear Father,
Unless you had promised to take care of their things, no, you are not responsible. They should not have left their things lying around unattended.
If you can afford to do so you might offer to make up for (part of) their loss as a matter of good will, but you are not obligated to do so.