I ate and fingered my stepsister after I caught her trying to hump a pillow

I walked into my stepsister's bedroom and caught her trying to hump her pillow. I wanted to excuse my stepsister, but she begged me to stay. So I stripped my stepsister naked and started licking her wet pussy. I enjoyed licking my stepsister's pussy so much that I ended up fingering her creamy pussy until she had a shaking orgasm.