That statement wouldn't be true for my first quilt. I made it back when I was still in high school just because I wanted to get a start on things for my "someday" family. It has been wrapped around all three of my children and has also been wrapped around three of my four grandchildren. It still looks great though it could stand to be re-tied now. I told my DD to send it to me when this youngest grand baby is done using it so I can quilt it properly, now that I know how to do that.
Whoever was teaching your SIL is a downright negative drag in my opinion. I'm so happy she has persevered through it all and still wants to quilt.