I think you got her reaction right. Did she already know Ryan had cheated, or was this new, too?
Okay so yeah, that's a good reaction, since the best friend part is clearly the shocker here. I like it.
The reaction seems fine, some of the prior dialogue struck me as a little stilted?
I keep wanting to tell her to cheer up! Ginger seems so jaded! I want to see her go through a change and become a lighter person. So this is a great piece since I can't wait to read more. Good character development with Ginger, and her reaction is real. The guy almost seems too perfect in this exchange. Does he have any flaws? If only to give him some dimension.
BTW, we spent a family day in your town on Monday. The kids had fun running around on the trails in the rhododendron garden.