The throw will also depend on where in the house the candle is lit. There are air currents throughout the home and you may find that if you have a light throwing candle that is normally a good thrower you have to move it to another spot. I have a place in my living room (two story with overlook balcony) that if I burn, I only smell it upstairs. But I smell it in all the bedrooms, hallway and on the stairs. Next to it there is very little throw. If I burn the same candle in the kitchen (next to the two story room), I get a great throw throughout the main floor, but little to no throw upstairs. The house is about 2000 open square feet on the main floor, about 1/4-1/3 of which is that pesky two story room. If I burn a candle in the powder room, I smell it throughout the foyer and the hall and the stairs. All this to say, if she has a large home (or even not), try moving the candle to different places to increase the throw. I literally was trying to figure out what I could do with my dud candle 2 days ago... until I went upstairs and it was so strong I could hardly breathe!! (WYW Van Grapefruit, 1/2 oz to 1 lb in 464). Moved that sucker to the kitchen!!! -Kristi