When Jen is at the cash bar and puts down cash, the next time she uses cash to buy a drink, the image has been flipped, and the serial number from the five dollar bill is the same as it was the first time she used money, but just in reverse.
In the montage of Jen buying drinks at the cash bar, the second close-up of her hand placing money on the bar is reversed, causing the writing on the bills to appear backwards on screen.
It seems highly unlikely that an experienced attorney like Mallory would react with such disdain to Mr Immortal, at least in his presence. As someone who has been practicing divorce law for many years she would almost certainly have worked with clients whose actions were far more odious than his.
Most attorneys at large law firms have a particular area of expertise that they specialize in. It's unlikely that Mallory would be handling trademark disputes in one episode and then divorce cases the next.
Both Mallory and Nikki violated their professional duty to Mr Immortal by not driving as hard a bargain as they could in the settlement.
Nikki Ramos and Mallory Book was talking about the website about She Hulk, Nikki Ramos stopped for a second and looked at the camera. Then she tried to continue the scene. She thought that the scene was over or something.