Her block is Duck & Ducklings:
To make this block, cut your squares as directed, then cut most of them in half diagonally, except for the center square.
Make four units using one dark triangle and one light triangle like this:
Then add another triangle and stitch along the straight edge of the dark triangle, make four. Press this triangle out, then repeat the process for the other side.
Your finished triangle units should look like this: (the left is sewn together, the right one isn't which is why it looks bigger)
Sew these units to the large triangle, forming a square.
Follow the diagram in the instructions to put the block together. Call me if you need help! I always have a sewing machine out and ready if you want to come by and have me help you.