I almost got the feeling that Kim was concerned there was something illegal going on with Mesa Verde expanding so fast. Probably more likely she was just feeling overwhelmed, as already mentioned though.
I think it is just a simple case of her being overwhelmed. She just recently went through that experience with the oil client which resulted in her exhaustion and wreck.
But....I do think it would be a great tie in if we eventually find out that the bank chairman is dirty, and one of his largest clients is laundering money for the growing chain of Los Pollos Hermanos.
Doubt Kim could be suspicious of wrong doing at this stage.