stress plant

ok so ihave a very small grow consisting of 2 plants but i keep one off to the side and give it shittly conditions just to see what it can take it is a female taken from outside to in i transpanted it messed up all kinds of roots revegged it and all it had was single bladed leafs put it in hot cold under watered over watered and its buddin perfectly with the other 2!...now i hear how easy it is to turn a plant hermi but ive givin this thing hell and its still truckin....could it be the strain? is there any explination??