California. I was divorced in 1985 my ex got custody of the 2 boys we had a child support maintenance agreement worked out where I paid $400 a month (at the time I made around 22K per year) and I paid for their health insurance. Over the years the boys took turns living with me because their mother couldn't deal with them, she never paid me a dime but always insisted that I pay her child support for the boy still with her, because I started making more money I increased her child support to $500 per month and would pay for their clothes and paid for them to play little league and a few other extracahicular activities. Just before the oldest turned 18 she went on a website and determined that she was entitled to $1000 a month and sent me a letter asking for more money. I went back to my original lawyer and talked with him, we determined that her lawyer had never filed the child support maintenace agreement (most likely because she didn't pay him) I offered her $600 a month which she accepted. My boys are now 25 and 27 and financially irresponsible, they have borrowed money from me a few times and whenever they go to their mother she says that she is going to sue me for all the back child support I owe her and give them the money.
My question is, does she have a right to collect any child support from me? I never missed a payment and if I was late I always paid her within a few weeks sometimes causing my other bills to be behind.