The Energizer is still available at Home Depot, and is a great value.
Elderly lady should have easy, long running, bright but not huge/heavy. I'd stick to a 4D model, not 8. Far easier for her to reload and buy batteries without alot of cost or hassle. Easier for her to carry around her home, too.
The 4D colemans are ok; I'd go with the Energizer or Steelbeam fluoro. Why? Because you mentioned being able to read, which means being reasonably close to the lantern regardless of type. The fluoros have FAR (re: almost none) less glare and are easier on the eyes, and have great runtime to boot. The Steelbeam also has a much warmer and more pleasant color temp which she may find appealing, especially for longer usage.