How about this? Next Monday night, I will send her this text:
"If you like, I can drop off D3 and D4 at your apartment on Tuesday and Thursday mornings on my way to work. I will call you from the playarea at your apartment when I arrive and we can exchange them then. Or your sister can drop them off when she drops off D13."
D13's summer program is about 1/4 mile down the street from W apartment. W's sister also passes by W apartment on her way to work.
M-40 W-33 D3, D4, SD13 T 9 YEARS M 5 YEARS ILYBINILWY APRIL 2012
