Cal. Fam. Code § 8812

Any request by a birth parent or birth parents for payment by the prospective adoptive parents of attorney’s fees, medical fees and expenses, counseling fees, or living expenses of the birth mother shall be in writing. The birth parent or parents shall, by first-class mail or other agreed upon means to ensure receipt, provide the prospective adoptive parents written receipts for any money provided to the birth parent or birth parents. The prospective adoptive parents shall provide the receipts to the court when the accounting report required pursuant to Section 8610 is filed.