Co worker

I’m try make this short. How do you tell a co worker she needs find her own ride to work! When I first started this job she would ask another co worker but now that I moved to my new house and she knows I live close to her and I pass her house to go work she asks me for rides. My other co worker was getting tired of giving her rides because she doesn’t even offer gas money and she can be kinda rude at work too. She has a car but let’s he daughter use it to go school and work. She is kinda rude at work but lately she been kinda nice I think it’s because I been giving her rides.