True, the trainer don't work.
But you don't really need it.
At the start, touch her with only one hand, and watch how many Z's are coming up from her sleeping.
When it drop's to one Z, take the hand away, drag it away, or left click on it so it disappears.
Wait for the Z's to get back to four and then put the hand back, on her tit's is best for starting off.
As soon as the point go up by 4, level up her sleep level, keep doing this until her sleep level is at 99.
As her sleep level increase's you can start touching her in multiple places, roughly one more hand each time her sleep level goes up by 10, and remember, always watch the ZZZZ's.
There are multiple things you can do with her as her sleep level goes up, but safest to wait for sleep level to be at 88 before clicking the top box with multiple task's.
As for cheat engine, you can still use it, search the amount of points you have, after you search it 3 or 4 times you will find only 3 coming up on the search list.
drop them to the bottom bar and add 999 to each of them, you will suddenly have 999 points to play with to level her up most of the way.
Add more point's as you wish, this is a good cheat I came up with for myself, it works on all 4 games.
This list only has 1-3,someone will add number 4 sooner or later, and number 4 is the hardest of the games.
I will add the torrent for anyone who wishes to download number four.
Hope you guy's have fun, and hope I helped.
Night High 4