I agree that making the 1/4 inch seam will be the most challenging thing for your friend. I sewed all my life but only started quilting when I retired 7 years ago. I could not believe that a 1/4 inch seam would hold anything!
I would guide her to a rail fence or Warm Wishes. Each works very well for a beginner. Or the Double Slice Layer Cake. I lean towards the rail fence. It looks really good and goes pretty quickly, though the other two do also. You might show her each online and see which appeals to her.
Dina