Not a spoiler--sorry! I've been calling Tylenol Head Jason since last issue--I didn't mean that as a spoiler. He doesn't refer to himself as Jason and the idea of him being Jason and fighting with Dick as Jason is speculation as my part. Don't take it as a revelation of what's actually going on in the issue! It's Red Hood, the guy from last issue, who interacts with Scarlet. I'm assuming it's Jason, but he hasn't said who he is.
Or else that she's a bombo who hadn't paid attention to any announcement about Damian, who is already known as "Damian Wayne" IIRC.
I'm not commenting on her missing the announcement of Damian but her missing the existance of Dick and Tim as well. They might not know Dick personally, but I'd think they'd know that he was Bruce Wayne's son if they even know him by sight.
I still think the point here is that these are women who haven't heard about Damian and know about Dick but don't consider him Bruce's son, rather than that they not only don't know about Damian but also don't know who Richie Grayson is within their social circle.