We try.

No one gives her cash, which is a huge boundary for all of us. If she needs an item, we buy a quality version of it. If she needs food or something else, we pool resources for a gift card.

Luckily for her, when I bought my condo three years ago I specifically picked a place near good public trans, and I became an e-scooter guy this year, so I don't need a car. She lives in a suburb and, unfortunately has to have a car to live, so I get through it.