Beautiful machine - glad that she has gone to a good mommy.
I have seen the long bobbins at - of all places - Hancock Fabrics. They are stocked along with all of the other bobbins. As long as you have the carrier you are set to go. I have stitched on a machine that took the shuttle bobbins and luckily had the owner available to do the adjustments. BUT it is very tedious to wind the bobbins. They don't have the regulator button that adjusts the feed on to the bobbin. My friend who owned the machine said that that was the hardest thing to adjust to.