If she is a minor, it’s possible; otherwise, she needs to stop going to her sister’s.

…and if you intend to claim the separate property interest in the home, you need an appraisal as of date of marraige.

It depends on what was forged and how it impacted her ability to get guardianship; there must have been other circumstances that convinced the...

…only if he used it for something that did not benefit the community, which under these circumstances is probable.

…and get her to put in writing that she’s withholding your child because she wants more money.

If it involved community property that has been divided in the divorce proceeding, it is too late.

You don’t need to register it for it to be “official” - only if you need some enforcement by California courts.

…and divorce in California is “no fault” so I don’t see a court ordering him to agree to the refinance; you could buy out his interest by...

She may need a Limited Conservatorship depending on where she is on the spectrum.

Probably - but it won’t be prosecuted; contact whomever he submitted it to. I don’t know what a “middle class debit card” even is.