Try using the nearby dish soap around her waist to slip through.

(Chapter originally by doragom333 on writing.com)

Pinned as she was, Toriumi could not get her arms in a good position to raise the window enough to get inside. However, she saw a bottle of dish soap that she had left on the counter nearby. For once, Toriumi was glad she had been lazy and hadn't done the dishes yet. Stretching with her arm she barely managed to grab the bottle without knocking it down and brought it over to herself.

"This is gonna suck..." she sighed as she opened the bottle.

Moving it over her back, she squeezed, and involuntarily shuddered as the cool liquid touched, slowly sliding down towards her waist. "Hurry up. C'mon already..." she said, trying to will the soap to move faster.

Soon enough, the soap reached the point where Toriumi was pinned by the window, and then she began to struggle anew. Twisting back and forth, she tried to pull herself through, only to make no progress. Out of patience, she snatched up the bottle again and squeezed heavily with both hands, shooting strings of soap fluid back across her body towards the window. "Come. On. You. Stupid-WAH!" she grunted, and screamed as she suddenly began to move.

The soap was finally doing its job and allowing Toriumi to slip under the window. This would've been a good thing, except the direction Toriumi found herself moving was backwards! "No, no, no!" she yelled, arms and legs failing as she tried to grab on to something to keep herself inside. Her struggle was great, but could she manage to keep herself from falling?