She felt weak,  not only physically but spiritually as well. The physical category is easy to explain as raw nervousness. But she cannot shake the feeling that she's doing something terribly wrong as she sinks to her knees before Frisko.  He takes no time at all  in telling her what to do, a little gasp escaping her as she witnesses his engorged member. She doesn't stop though, placing his cock between the cleft of her breasts, squeezing them together around his maleness. Hesitantly she starts to move her body, trembling a bit as that musky dampness smears over her flawless skin.