So I found this recipe on Pinterest for Marshmallow Fondant. The recipe can be found here.
Surprisingly, it wasn't super hard. The recipe was easy to follow and the fondant was pretty tasty. I do have to say it tasted best fresh, and not quite as good the next day, but fun none the less.
The cake didn't look perfect, and for me, the perfectionist, it was hard! But my niece and I had fun doing this together. And she had a blast decorating it. We've decided we will make a cake together every time I go to visit her and vice versa. Looking forward to this fun family tradition.