Was up till 2 AM playing this last night. It is quite fun. Not all that difficult really. I am thinking that Theresa will like it since it is not as intensely sensitive control wise like many other Mario games. I only died once in my 3 + hours of game play. it is kinda of a puzzle game. There are boss stages that require some tricky thinking. I even had to search for a walk through online to beat one of them.
The one annoying part is all the dialog. It is at least 10 minutes before you get to play. And through many parts of the game you have to continuously press the two button to get through the dialog. other than that a brilliant and fun game. it is a keeper.