Is it portable? As in you can port these games easily to consoles and handhelds like Unity3D?
Though I'm getting slightly off topic here, unless Lazer states otherwise, that she has to use the software she mentioned. Other things to mention is that it's a small game and not a huge project, so I'm sure that starting off she would like to use something existing rather than starting from scratch (ergo why she wanted it based off Mugen).