Mrs. Roberts stomps by to have a look at what's going on here

[P281]

Watching Sophia orgasm right in front of me is extremely hot. Her expression - only describable as ahegao! I'm hard! But, then, from the corner of my eyes, I see brown locks approaching quickly. It's Mrs. Roberts, the librarian!

Sophia is still panting from her peek, as Mrs. Roberts demands to know: "What's going on here?!"