She has a lot to learn...how to budget her money and not to expect to be paid her maintenance any earlier than expected. Her priorities aren't in the right place at the moment.
I do hope you and your child are feeling better soon.
She really does need to grow up.
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.