mcfluffy, she sucks her fingers too, last time it used to be her fist, now she can manipulate her fingers, so its very her thumb or index or both or all her fingers. Sometime she sucks her right hand, then my mum will say "see she is right handed", then after that she will suck her left hand also, sometimes both hands. Yes, if only there was some manual. Sometimes when she sucks I also dont know to feed her or not to feed her.