Brilliant idea of one machine at each place, vintage machines really are "take two, they are thrifty"
If she wants only one, and a hand crank, a week is probably too soon to get it organized, but look at my thread
here
http://www.quiltingboard.com/vintage...n-t268445.html
I am absolutely wild about this machine, and since it comes motorized, it is a matter of just a minute or two to switch it over. It is just like the Singer 99 3/4 machine but aluminum.
If you like the idea, put her in charge of trolling Ebay and ShopGoodWill and put a machine wanted note up here. The hunt was part of the fun
I'm so happy for you that you have family even willing to entertain the idea of sewing for themselves. Encourage!!