He snorts and doesn't say anything to comfort her about her accent because she's not wrong. He just isn't the type to accuse her of it (at least, not her, since he has no trouble giving the other Losers' hell for their atrocious Spanish, especially seeing as Jake seems to willingly not try to get a better accent).

"If you're sure," is what he says, instead, because he likes a good party, but if she doesn't want to call such attention to herself, he can also understand. "And don't feel bad about the meeting. You did what you must."