Bad strategy
I have loved this movie for years!! However, for a bunch of card sharps, Ballenger and "the little lady" sure did screw up at the end. Whenever Ballenger came in and extended credit toward her and her hand, if he had just seen the pot and raised it $500 instead of going for a huge bit of $5000, they could have picked their pockets. You never want them to fold, you just go a little higher, bit by bit to keep them in the game for a bigger payout. It was obvious that Ballenger was going to stay all the way with the money of the bank behind her, but they spooked the "high rollers" out. Earlier, even Henry Drummond said that the pot was going to get bigger and bigger and bigger even if she was able to stay in the game. They could have gotten a lot more if they "had played their cards right".
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