A Misunderstanding
Ruben remarks that when he called her she said she was going to come and fetch him and take him home. Ruben still laughed and thought she was going to drive him all the way home to Ohio, but little did he know she was going to take them into her own home and care for them.
Rubin remarks that she could easily have said that there was a problem and refused them. Instead, she made them part of her family and, even though they were complete strangers, it was never an issue.