Ask HN: How to verify a claim of ownership of a California LLC?

There is a California LLC, which according to Person A, was co-owned by Person A, B and C. Now Person A claimed that B and C faked her signature and occupied all her shares of the company. I'm trying to verify her claim. I went to https://businesssearch.sos.ca.gov/ and found the company's documents. But the most recent State of Information form does not have the name of Person A. And none of the company's other documents has the name of Person A. According to the most recent form. B is the CEO, and C is the only manager/member. I also found this site: https://www.corporationwiki.com/ , but according to it, this company was owned by Person B, and D. (D's name also doesn't appear on the official State of Information form.), but is now owned by Person C. This result confuses me. 1. Can the state of information filling be a proof of company ownership? 2. Is "member" or "manager" equal to "owner" on the state of information form? 3. Is the "member/manager" list of the form trustworthy? How come there is another Person D, which doesn't appear on official forms, is considered as an owner of the company by the corporationwiki site? Thanks,