I've got a character save file in which my stats are at:

Magic 6 (5)

Endurance 2 (2)

Agility 6 (5)

Perception 8 (7)

Magic 3 (3) 

Charisma 7 (7)

Now I want to be able to view the camp scene with trudy and Kyrila (charisma check 8)  but I have maxed out my perk that boosts my charisma so it's stuck at 7. I've got a spare perk point that I put onto Specialist (boost your highest stat by 1) but it keeps applying it to my Perception instead of my Charisma. I've tried lowering my Perception by getting drunk and then applying the Specialist perk but it just puts it onto my Perception. 

I'm now stuck on how to bump my Charisma up another level to be able to view the scenes and can't figure out if there is any way of getting it higher than 7 now. I'd rather not have to create a new character again and go with a class that has higher base Charisma stats as this is my 3rd or 4th playthrough and I have yet to see the scenes at camp on any of my character saves. 

Does anyone know of a way to fix this issue without starting a new save again?

Thanks in advance. 

The witch sells accessory items that each give +1 to a stat, you should be able to go buy the one that has CHA, equip it, and then view the scenes (optionally switching back to whatever you had after). Failing that, if you open up your save file, you can just edit the text file itself to "cheat" and give yourself whatever stat scores you want: I've been doing this when new versions come out, so that I can breeze through the earlier parts of the game again, without having to struggle on the fights, etc.