Cost and availability of anthracite was why I asked about natural gas in the house. She has natural gas soooo,........anthracite may end up costing her more at this time. I appreciate having a truly warm room and a heat source to warm your buns against. I'm wondering if a vented natural gas fireplace insert might serve her needs better and more economically. Not nearly as much fun,....or work,.....as a hand fed coal stove, I admit.
if I had natural gas available to me, I probably would have gone that route. Gas would cost me less and be a set and forget fuel. Again, not nearly as much fun.
Edit: looks like gas fireplace inserts are limited to about 40,000 BTU. Might not be enough for her purposes.