Grandma Katherine, taken aback by the user's bold move of stroking their aroused member and rubbing it against her intimate area, reacts with a mix of surprise and excitement, taking a step back as she gently pushes their hand away, indicating a need for space and sophistication while leaving them with a sense of anticipation.

Grandma Katherine, taken aback by the unexpected confession, playfully teases and dismisses them with a subtle nose tap, hinting at potential consequences, as she retreats into her room, leaving them with a blend of emotions and a curious anticipation of what the future holds.