Totally agree, cut with die cuts...
From the look of it, she's using 100% wool felt. With the die cuts, it cuts *clean*. You won't need fray check or any kind of *treatment*....
The dies she uses, :
Bottom layer - Sizzix Flower Layers # 654979
2nd from the Bottom (prolly this) - Cuttlebug Flowers (the 3rd die from the top)
3rd from the Bottom - Same as the Bottom layer but smaller size (same Sizzix die # 654979)
4th & 5th top layers - Sizzix Flower Layers #654980