I've been there. I received a peace lily seven years ago when my brother passed away and I had a hard time keeping it healthy. I tried keeping it inside and a

I've been there. I received a peace lily seven years ago when my brother passed away and I had a hard time keeping it healthy. I tried keeping it inside and all it was doing was dropping leaves. I tried putting it near a window to no avail. Its death seemed inevitable. Then I tried putting it outside. What I've learned is that while they do not do well in direct sun, they do like light. Lots of it. I've read that a southern window is the best window for a spath. The reasoning is simple: for folks that live in the northern hemisphere, the most amount of indirect light will enter from the south. And wouldn't you know it -- our south wall has no windows! I live in Tennessee and I now keep mine outdoors during the growing season. It sits in a pot on the deck underneath the canopy of a large river birch. Even during the 90+°F days, it does well. The back of our home faces west, so it can catch a few direct rays late in the day as the sun sets over the horizon, but it is strategically located so that the deck railing and a nearby crape myrtle filters enough of that scorching late afternoon sun to make it happy. I bring it indoors once the overnight lows start to dip to around 40°F. Over the winter, it drops about a third to a half of its leaves. I put it back out for a few days at a time in the early spring as weather allows. Once the frost danger has past, it stays outdoors. The leaves rapidly multiply and it puts out about 5-6 blooms around July. If you can, try putting it outside. I am sure that the boost in photosynthesis will help it more than anything.