First of all, I should note that, as always, Google Answers provides
general information and is not a substitute for professional legal
advice. If you need professional legal advice, you should contact a
qualified attorney in your area.
The answer to your question is "no."
Property inherited by one spouse is NOT community property in
California. Inherited property is "separate property," so even if your
daughter and her husband were happily living together, he'd have no
legal right to your daughter's inheritance.
"Separate property" is defined in Section 770 of the Family Code.
Inherited property is specifically mentioned in 770(a)(2) as property
acquired by "bequest, devise or descent."
"770. (a) Separate property of a married person includes all of the
(1) All property owned by the person before marriage.
(2) All property acquired by the person after marriage by gift,
bequest, devise, or descent.
(3) The rents, issues, and profits of the property described in
(b) A married person may, without the consent of the person's
spouse, convey the person's separate property."
The "bequest, devise, or descent" language covers all methods of
inheriting property under wills, trusts or intestacy (i.e., no will).
find california code: separate property bequest devise
I hope this helps.