N.H. Rev. Stat. Ann. § 132:35

Performance of an abortion in violation of this subdivision shall be a misdemeanor and shall be grounds for a civil action by a person wrongfully denied notification. A person shall not be held liable under this section if the person establishes by written evidence that the person relied upon evidence sufficient to convince a careful and prudent person that the representations of the pregnant minor regarding information necessary to comply with this section are bone fide and true, or if the person has attempted with reasonable diligence to deliver notice, but has been unable to do so.