Ugh! Sakura struggled in the rock to get out and it took more time than she had. The kunoichi managed to gather enough chakra to break out, but Demona was already in sight, flying at her. Demona closed the distance between them in a blink of an eye and her foot buried itself in Sakura's stomach.
Ghhuuuaaaaaaaaghck!!! Sakura screamed out in pain. This blow certainly hurt much more than the last one, probably because her stomach got sandwiched very hard between the rock and the foot of the opponent. In her mind, Sakura took note to repay her for that.
While her body stopped Demona's momentum, that wasn't exactly great news for Sakura, because that momentum was handed over to her and the stone could not stop that kind of force. In simple terms, Sakura's body continued smashing and drilling through the hard rock. She groaned and screamed in pain as she went through the entire thing which was maybe 50 meters thick, Sakura wasn't sure.
Eventually, Sakura's body found its way out of the cliff through the other side and fell on the ground where she laid and groaned. That was a good hit Demona landed on her, Sakura had to get back into the game somehow... A long hole connected the two sides of the cliff now and the demon lady was bound to come after her while Sakura just laid there and nursed the pain, or at least thats how it would appear to be when Demona showed up.
In reality, by that time Sakura would've already substituted herself. There would just be a log left, but it would appear as if it's Sakura's body laying there, while her real body was hiding nearby, behind a bush, applying medical jutsu to her hurting stomach. Sakura would grit her teeth and not let out a sound as she would observe through the bushes and see whether Demona would like the surprise Sakura left for her.
The surprise was a paper bomb on the substitution log that would detonate when Demona got close enough to deliver the killing blow. It would have enough force to blow up a building.