Are my reasons valid for wanting to end this friendship?

Everytime I’m around my friend my stomach begins to hurt, because I’m realising she’s just a user and a mooch and a leach. She can just begg for money or help from me and people like me but I would never have a good friend to depend on. She literally keeps everyone in her pocket to use them. I helped her make extra money and everyday she blows the money, then calls me begging and asking for more rides and more help. Then because I have a big heart I end up giving in. In my head I’m asking where does this end that a big grown 400lb woman with a husband is depending on a woman younger than her that’s single. I could never get away with this I could never begg from anyone. Also like the true narcissist that she is when I say no she just goes through her contact list full of people to use. She even is now offering my service to her other user friends. Last night while I was in the car with her my intuition was screaming to just cut her out my life, and ghost her block her, block her family and friends. I have tried to end the friendship with her but it’s like she can sniff it out, and she will say how greatful she is for my help. I feel like it’s all manipulation to keep people around to use. Also she’s not much help because she goes with me to do deliveries at night since I’m a black woman in the south sometimes I don’t feel safe at night taking orders alone. Everytime someone yt says something racist to me she never defends me, or has my back. I don’t expect her to cause a scene she could just tell them that’s not right. You know defend the black woman who is helping you and making sure you have money, food, and car rides almost everyday. Last night was the drawing straw I was driving through a parking lot and two white men said “ I hate black girls” in a loud megaphone. I can’t make this sh*t up. So I turned my car back around asked them what they said to me when I drove by and they lied and so no ma’am. Funny this is my friend is the one who heard it loud and clear told me and then got in front of those two white men and turned her back on me. Almost like she gets joy in seeing my scared or humiliated. So I just want to stay to myself I can help, feed, and save people and they still will not have my back. I’m jist being used. Never again. Also I already explain to her that she does this everytime and I’m suppose to be her friend and she says she just doesn’t want any conflict because she doesn’t want to lose her disability check that she blows every month. Lol