California Code, Penal Code - PEN § 278.7

(a) Section 278.5 does not apply to a person with a right to custody of a child who, with a good faith and reasonable belief that the child, if left with the other person, will suffer immediate bodily injury or emotional harm, takes, entices away, keeps, withholds, or conceals that child.

(b) Section 278.5 does not apply to a person with a right to custody of a child who has been a victim of domestic violence who, with a good faith and reasonable belief that the child, if left with the other person, will suffer immediate bodily injury or emotional harm, takes, entices away, keeps, withholds, or conceals that child. “Emotional harm” includes having a parent who has committed domestic violence against the parent who is taking, enticing away, keeping, withholding, or concealing the child.

(c) The person who takes, entices away, keeps, withholds, or conceals a child shall do all of the following:

(d) For the purposes of this article, a reasonable time within which to make a report to the district attorney's office is at least 10 days and a reasonable time to commence a custody proceeding is at least 30 days. This section shall not preclude a person from making a report to the district attorney's office or commencing a custody proceeding earlier than those specified times.

(e) The address and telephone number of the person and the child provided pursuant to this section shall remain confidential unless released pursuant to state law or by a court order that contains appropriate safeguards to ensure the safety of the person and the child.