You might want to change feeds and see if that helps. For the runny stool you can try a probotic.i use both probios probotic and switch it up with pro vita. The pro vita has probotics and vitamins in it. both these are powdered probotics for poultry. they add benifical bacteria to the gut in a larger quanity than they can get from plain yougart. They have several different benifical bacteria that help balance the gut and stool. I use it often but can also be used to stop loose stool.it can be given daily and is safe for chicks. You might try one of these products to help her with her gas and stool problems.probios is a excellent product. Pro vita is good as well.i would give that a try and see if it will clear up her gas and loose stool. hope this helps you out. Best wishes