Once Hewinia was persuaded, like how Ulu was, to use her own power, she was sure to feel wary because she absolutely wouldn't trust kindness without a reason.
But if she was told that it's just "rent" and she could only use it three times at most, then Hewinia would consider how to maximize the use of these three times, and if she found it useful, she would definitely try to obtain more opportunities from Bai Wei.
Moreover, she'd feel like she earned it through her own effort, just like she gained knowledge from Ogg and got information and connections from other girls.
As for how effective it would be.
That remained to be seen.
After all, for this little praying mantis trying to catch cicadas, Bai Wei had already handed over the talons, how to use them was up to her.
However, Bai Wei did not plan to pin all his hopes on this little praying mantis.
Now, he was different from the time with Rhein.
He could do much more.