I think Billy's in "taking a break mode" from his illness and won't be working on machines for awhile. There are people on the web that will refurb your machine Selena, but it won't be quite the same...the decals aren't available for replacement...but you can bring that machine back to life by yourself...follow Billy's tutes in the tutorial section of the board...at least make her sew again, looks aside, sewing is what she was made to do!!
How wonderful to have your great grandmother's machine...I'd LOVE to have a family machine like that!