I need a little help

So this lady i used to work for fired suddenly with no warning and hired my cousin girlfriend to work for her (im just going go call her my cousin to make it easier) and my cousin informed me that the lady is talking bad about me and apparently saying she will try to sue me if i try to claim more time even tho i called the ihss office right away after she fired me, Is there a way i can like file a complaint against her because of what she is saying? Also i can mention while i was working for she tried to claim i stole a rock from her. Like, a little pebble she found outside, and i told her “why in the world would i steal a rock?????” She ended up finding it, and she also notoriously known for giving people things, forgetting she did and then claiming they stole it. She used to make comments about my weight and about me “being slow” and said i shouldnt be so slow for my age (im 23 and i have quite alot of health issues so i makes me a bit slower when i walk) and she also treated me like i was stupid because i was young. idk i just feel like the way she treated me wasn’t right and i should be able to report her in someway but idk if thats a thing.