For your consideration ...
Not to be insensitive. Your daughter was in a relationship with the shooter and you only met him 3 times? The post by
@vraiblonde, which was written on Jan 21, 2020,
"IMO this is more a reminder to parents to keep tabs on who your kid is hanging out with and run off the bad people." Said nothing of keeping tabs on where one's children are, but rather that one keep tabs on who their child hangs around with or is seeing. She was not judging you. Pretty sure she doesn't even know you. And if Austin Rollins was physically and verbally assaulting your daughter after they broke up, perhaps a court restraining order would have been the appropriate thing to do?
Losing a child in their youth is the most horrible thing a parent can experience. I am sorry this happened to your daughter and the grief you are going though. She was a beautiful looking young lady.
Welcome to the forums, where there usually is no sweetener filter of personal opinions in the comments.