I'll have to show you what I've learned. [It isn't much, but she's beginning to piece together everything better. Bellamy's arrival helped spurred on some of the knowledge she has, especially in contrast to what she knew before. Contextualizing this world with her own has helped, even if she is still facing some difficulty on a narrower level.]
Petre worried that you might not return. [The sense is that she did what she could to help, but doesn't speak it.
no subject
Petre worried that you might not return. [The sense is that she did what she could to help, but doesn't speak it.
Still, it's better that she knows.]