I love this sequence as well.  From the subtle look of surprise and a strange energy runs up through Amanda’s arm… to the exaggerated perspective really highlighting the overwhelming difference in strength between the robber and Amanda in the large panel…I think it really works.

 

The punch panel was mildly inspired by One Punch Man, particularly the fight scene between Saitama and Genos, and the punch Saitama throws at him to end the fight.