This was a great issue for a comic that's quickly finding its footing again.
Sadly there were no X-23 appearances, but that was to be expected as the core team is interacting with the Runaways in this story. Gage had made comments before suggesting this would be the case as he didn't know at the time X-23's comic was getting canceled. We still might see something about her training with Black Widow, but that might have been an idea rationalized after the fact and too late to insert into this story. Not his fault on that either as the communication just wasn't there for him to be aware of that at the time.
Coming up after this arc will be AvX though. There we will have a larger focus on X-23 with her opinions on the X-Men and whether or not she would truly choose a side. There, it will hopefully dive into her thoughts about turning children into soldiers, and if the Avengers are making the right choice or just forcing her to be stuck in the middle between friends. Something I hope is punctuated with a usage of Mercury and their friendship, but also uses Surge and her hypocritical ways.