It sounds like you might want to get your own attorney to protect your interests. If you do not want to take that step just yet, you can file a Request for Special Notice in the probate. If a probate has not been opened, you will definitely want to speak with an attorney. Most give free consultations so you have nothing to lose.
I agree with Christine and also suggest you take a look at all the documents in the court file. A copy of the will should be in the file. In Los Angeles County, you can view court files at the courthouse. Some other counties in California let you view filed documents through their website.
Get your own attorney to help you with your rights to receive notices, a copy of the will and an inventory of the estate.