Can Maya spend my money?
No. Maya places no orders and touches no bank account or card. Buying points is a checkout you complete yourself.
No. Maya does not place orders, does not check out for you, and does not touch a bank account or a card. She has no way to.
The one time money is involved is when you choose to buy more points, and that runs through a normal checkout page that you complete yourself. If you close it, nothing happens.
Need something more specific? Text Maya and she'll answer with your account in front of her.