While we were away on holiday over the Christmas of 2010 our house froze and so did our houseplants. My Peace Lily looked sad but was alive so I was determined to nurse it back to health. It had always been a lovely flowering plant. More than a year on I'm still struggling. I've now divided it into five plants and have them variously in the bathroom, living room and greenhouse. They are all alive but in varying degrees of unhappiness and don't seem to be developing good root systems. This is a picture of the best of the bunch which has been in the bathroom and you can see it has new leaves, but others are drooping. I know I could just buy a new one but I'm feeling stubborn! Any ideas please? I have of course fed and watered them to the best of my ability.