Hold on, slow down a moment. Let me just be sure I've caught your meaning: you were talking to Isabela, intending to learn the Duelist specialization. You brought along Zevran and Leliana, so they could catch her cheat. Then something about resting? ...Did you sleep with her?
Remember, Isabela unlocks a specialization, not an abiity or anything. When you level up, you may pick "Duelist" as a specialization if you haven't used up your specialization points (you get one at level 7 and another at 14, IIRC).
I think what happened is that he encountered Isabela at The Pearl, played her game and then left thinking she would still be there once he got back.
Sorry, but she's gone. You should take the training immediately. She doesn't hang around forever.
I did not sleep with her
So at level 14, it will be there again or what?
No, once you leave the brothel she is gone
No more opportunities to learn Duelist once Isabella's gone. You can always console command it.......
If you are playing on PC, you can use the cheat console to give yourself that specialization.
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