Help. Advice desp needed

I would like to get some advice on my situation. Short version I worked x number of hours and my client is a 5 year old autistic boy. Even though the background wasn't complete I still worked so technicially I'm working for the clients mother right? The thing is I felt extremely uncomfortable the first week because of the client's mothers advances. I got wierd texts' from her over the weekend. So I resigned today because it just wasn't right for my client. Now she is saying that I wasn't even on the payroll of the agency, but she DID pay me 9 hours outta the 28.75 that I worked last week in cash. But because I resigned she's saying I'm not getting paid for the remainder 19.75. Do I just small claims her for the hours or do I sue for the obvious sexual harrassment? (Ihave all the corresponding texts, vm's etc...) I mean if she would just pay me for my hours worked we could go our seperate ways.

Thanks in advance everyone.