Yikes...no fun! Personally, I would say things have changed and I am no longer able to provide extended hours.

If you decide to continue to offer the extra hour and just want them to leave faster, is there a way you could get the child ready and hand over when mom gets there? Like a gated entry way where mom arrives so you can dress on one side and hand over the gate and off they go? Or Mom could text from driveway?