I have had suspicions about the french lady all along. She seems very strange, and reminds me of Locke in her rogue, loner, survivalist ways. I thought it was strange when she delivered Ben to Sayid. If she truly thought she caught one of the others that stole her child from her, wouldn't she have tried to torture him herself to find out what he knew. If she was going to turn him over to Sayid to torture, wouldn't she want to be around to ask the questions about her daughter? Something does not make sense with this lady at all.