she probably meant flour sacks? which are printed cotton and were used in quilt making and sewing. I would consider it a vintage quilt, let's not forget machines have been around for 150 years!!
Now there are some people who say if you add one piece of fabric to a 100-year-old quilt, you no longer have a 100 year old quilt. I would say it is an old quilt with a new repair.
I would describe your friend's quilts as "made of vintage blocks and recently completed." I have finished off several older tops like that.