You can satisfy her if you're failing a scouting check in the beginning. She then will just be okay with fellatio (if nothing changed on this part from the last time I checked). You won't even get this check if your scouting level isn't 3+.
By the way, Charisma build doesn't mean you should suck at battles. If you farm Beginning Bonuses, you can make a relatively strong Enchantress. Or you can make a good Thief even without bonuses whatsoever and then get things that raise Charisma (Lacy Panties, Charisma Charm, spend 6 perk points on Hotter).
Yeah, you can take a carriage back to Silajam later on, so you're not stuck. If you can survive.