If that is the save you modified with your save editor, I can do nothing about it. There are no such bugs in normal playthrough, I am sure of it, unless you can provide an unmodified save where the issue can be reproduced, i.e. the following:
- You get Jenny to leave your room after the "girlfriend experience"
- You have the scene where she walks out of the room in the morning,
- but when you can roam again she's still sitting on the bed, so you can't goto her room.
- She also texted you to goto her room, and she's still sitting on the bed,
- if you try to goto her room it tells you "No, Jenny went into my room
So the save would be from right before point 1 in that list, meaning before you even invite her to the girlfriend experience.
Never edit a save with a save editor unless you want to really break it. The mod has an in-built feature to repair broken saves, which never failed to my knowledge. But it cannot repair anything that has been "repaired" with unofficial tools.