There are many aspects to quilting. IMHO, I feel I am best at putting colors/fabrics together and the actual quilting. My piecing is okay and improving. If I am selecting fabrics at a quilt store and an employee or a passing quilter suggests a different fabric, I will thank them and make a decision to include it or not based on if it SPEAKS TO ME. It seems like you are using all or nothing thinking that somehow you have given up all rights to call your quilt your own because you like a suggestion your Sister made. I may really like the fabric someone suggests and incorporate it in my quilt/design that doesn’t make it any less my quilt.