<human>: Give me the gist of the text in a nutshell

I can afford it. She nows I can, she knows my lifestyle. Ever since I turned 18 she made me get a job or get out so I could help her pay half the rent and bills since then, I recently moved out a year ago and I am living much more comfortable as I am spending way less than I was while living with her. I can save more because I don't lend her money as often. She always asks for money because she knows I can afford it, the thing is she will not repay me until 3 or so months later, she has never lent me a dime. Even when I ask her if she can repay it she will not; she always tells me she will pay me next week and it goes on for that for 3 months. It is not my fault that she is incapable of surviving by herself but I also don't want to feel guilty. I have lent her over 5k in the last 3 years, and she's paid the majority of it but I do not want to lose 300$ for the next few months as I like to keep myself financially stable. I don't want to be mean but this is just out of hand. How can I keep the relationship with my mother stable while not lending her this money?
<bot>: Mom is incapable of surviving financially, I have since moved out because she relies on me so much yet she still continues to ask for money. How can I keep my relationship with her while not being her personal credit card?