The age of consent is 18 years in California. Any sexual intercourse before that age with someone of age (> 18 years old) is statutory rape. Please see Penal Code § 261.5. Please see the link below for further information.
Please note that some professionals are REQUIRED by law to report the crime. See Penal Code §§ 11166, 11165.7 for further information.
This is a statutory rape, but it does not stop there. The parents of the young man are willingly assisting him in a possible kidnapping. Your daughter, because of her age falls under your custody and consent. You have given no consent for her to live with this family, you have expressed a desire for her to return to live with you, and the family is actively encouraging the young man and your daughter to reside with them.
With that said, this may also be a moot point. If your daughter is close to attaining the age of majority, which is 18 in California, then there would be little incentive for the District Attorney's office to pursue what would then be a consensual relationship in name and fact.
You also may want to ask yourself, if your daughter is indeed pregnant by this man, is seeing him prosecuted more important than seeing him gainfully employed and paying for his child?
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