I am a firm believer in "RIV-Nuts." In a case like this you might like to try them The dent is another thing....Looks like the side trim rail is bent too. That will support the dent. I guess it would be worth a try to take the rail off, drill a small access hole and use a dent puller. Replace the rail over the well sealed hole.
Remember what I always preach.....if your ever in a situation parking and you say to yourself.."I think I can make it.".....you can't.
"If it can't be reduced, reused, repaired, rebuilt, refurbished, refinished, resold, recycled or composted
then it should be restricted, redesigned or removed from production."