If she has a local quilt shop, that would be my first place to have the tops looked at. Are they antiques, hand pieced and maybe should be hand quilted? (They may be able to recommend someone to do that) Check to make sure the tops are all securely stitched, if not fix any problem areas. If she wants to learn to quilt them herself, they can recommend a class to take? They may also recommend someone to machine quilt them for her. A long armer would charge anywhere from $100 and up to do a double size quilt. The cost....If she quilts them herself, she will need a quilt batt...$20-30 for each quilt. She will need backing for the quilt, depending on the size (double) about 4 yards of fabric with a center seam about $60. I won't mention making the sandwich to quilt them herself because there are too many preferences and methods to list. If she has a quilt guild in her area they may be able to give some advice too.