You did the right thing in purchasing groceries for them. . As for purchasing things for her, i.e., clothes and fun things, she will need to wait until payday. She's learning the hard way that money only goes so far and needs to learn how to spend wisely.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.