I would like to think that as he is watching her do her little pantomimes, while she is having her inner monologue; that he is also thinking of her at this time: “This b%*ch be crazy!”
Oh! I get it!!!
Since she never knew his actual name from the novels, (which is very lazy of a writer to do that to a character), she just calls his father, because that is how and what she knew him as; the “father” of the villain!
I got it now!
You know! I had to come to the comment section first before I started reading, because a quote from the movie; Ace Ventura came to mind: “Joker saw and got jealous, that Deadpool got his own manga; so he took it personally.”