Especially after learning from Selena that Noland Lee possessed the extraordinary trait "Omniscient", Erica's regard for him was taken to a higher level.
As a Ninth Circle Silent Witch, Erica was well aware of the power of "Omniscient." As long as Noland Lee was given enough time to grow, he would surely become a famous Silent Enforcer in the realm of wizards.
Bearing this in mind, as long as Noland Lee's demands were not excessive, there was room for negotiation, and Erica wouldn't interfere too much with his decisions.
Noland Lee was also happy with this.
In fact, the current situation was the result of his careful management.
If he hadn't pre-designed his own persona, accurately established it, and demonstrated the strength to support it, he would never have been able to enjoy success on both sides.