My favorite part about this page is how Allison's toes are curled as she crosses her ankles at the small of her mistress' back in giddy anticipation of the fucking she's about to receive!!
That "mmh..." of Allison's in the bottom frame makes me think her Mistress sank her fake cock all the way inside her in one unrelenting thrust in spite of the resistance from her still-virgin-tight pussy -- it hurts, but the full-body ecstatic sensation she's experiencing from the complete penetration overrides the pain!!!