Pleaaaase. Mab is totally welcomed in knowing almost all of Margaret's name too in return! She still had a middle name tucked away but hahaha Matthew is gonna feel like a dummy for not realising he shouldn't be handing out his kid's name like candy to people who use names as magic itself.

I definitely know it'll be good for Mab and questionable for Matthew so I'm a 100% in on this. I suspect he'll call her when he joins the game in hopes of learning more about stuff. Since Heiji knows about Ms. Sommertset identity and Heiji also visits Mattew's pub now and then, I think it'll only be a matter of time before Matthew brings her up and Heiji is all

'did you give her your full name or anything'

and Matthew is all 'what no she know margie's kind of'

and then Heiji is all 'oh my god.'

Yes. \ o /