You need Pick Axe. Pick Axe you can collect in the Security Room. But to collect Pick Axe you must have Jumping Boots. Jumping Boots are on the 1st floor, but you can't collect it if the laser is on. To deactivate the laser you must turned on 7th Radiator.
Katherine 9th page - First clear the bush with Machete then smash the wall with Pick Axe.
kat 9. is, go outside, goto the back gate, turn left, goto bush, click on bush, machete, click on wall, pickax, get page..
What you miss is this. When you got here go and press Red Button. Code is 3678. That turned off the laser.
I had the same problem when I edited my save to have more than 99 coins. Reduce the coins and the problem will be solved. I have an online save editor if you want the link.
go back to the top of tower, goto the center of the south wall, click on weak spot, pickax , keycard...
If you are asking to refill the bottle. You need to go to the basement where the two girls are and at the top of their rooms there should be a broken pipe you can interact with.
You need to redownload it and then copy-paste the save file of the version of the game you played into the new one and continue from there.
