Yeah Willow manipulating Lucas into rehiring her made me very uncomfortable. And what happens when Lucas goes home from the hospital and eventually back to work? Will she once again claim that they're not putting the child first and therefore it's her responsibility to do so? She seems to forget that she gave him up for adoption. Yes, Brad and Lucas both were very grateful for her help getting Shiloh away from Wiley and graciously offered to welcome her as part of Wiley's life. That doesn't mean she gets to decide what is and isn't best for the child, or insert herself in Brad and Lucas' marriage.
There's no way she'll be able to step back, and it's nice that at least Chase sees it, even if he won't explicitly call her out on it.
Just wait until she finds out Wiley isn't really hers (if the truth is ever revealed to all).