Am having trouble finding any cultural details for this plant, but where is it now? Do you have it in the house, and how long have you had it?

I too have a limonella plant that arrived with a full compliment of leaves, and quite a few fruits. We have been eating the fruits, they are just tiny lemons, but all but about 6 leaves have fallen off. The plant is in full sun, inside the house in a very light warm room. Anyone got any ideas? This poor plant is looking very sorry for itself!