Dd has been through something awful recently, details aren't really relevant here.
One particular police officer made sure he saw things through from start to finish, sat for hours with her helping her, talking to her about his personal experience with a similar thing, just really went out of his way to help her. He went over and above imo.
I have obviously thanked him in person, but is it appropriate to send him a card or a small gift, is there some way I can email his superiors and tell them that dd and I are so grateful? I'm not sure what's appropriate or not here.
TIA