My step-mother is an excellent cook and gave me this gravy recipe when I had her gravy. But, I still have a heck of a time making it, because like Kelly I cannot make gravy!! Anyhow, maybe your mother will have better luck with this
Pour a little water in the pan meat was cooked in to loosen meat particles. Pour into bowl and let grease rise to top (or pour into fat separator like someone above mentioned). Take equal amounts of grease and flour (approx. 4T. for 3 c. gravy) and make into paste in pan; heat till bubbly. Over strainer, pour in drippings and approx. 2 or 3 cups of water with a couple bouillon cubes melted in. Stir till thickened. If too thick add more water. Not thick enough mix a small amount of flour in a little bit of water and pour into gravy. Season with salt, pepper and Kitchen Bouquet.