To be perfectly honest, I don't see the same significance in the post that you evidently do. It's brief and rather introductory - thematic but neither detailed nor emotional. It's just the sort of thing you might say to someone before you are ready to bare your soul.
The phrase I keep coming back to is "letting my child make a mistake". I know this is hard stuff to see happen, Liz, but 22 isn't a child anymore and you aren't in control. The damage that could ensue from you trying to assert control or even heavy influence could linger for years and extend beyond your relationship with Davin.
Lea