>>4421894
>because she realized that Machu doesn't care about her at all. Nyaan doesn't look her in the eyes or even acknowledge her when boarding the Gundam
The shot is framed differently.
Machu turns around to face her but Nyaan still has her back turned.
Also last episode she was deliberating over having wronged her on two seperate occasions.
Machu is the one who broke the bond, as well as with her mother, and she will have to be the one who repairs it.