Ask her to join up and post more pics so that we may be able to figure out what it is... I am curious about it... I have been looking in my Musalogues to try to ID it but can find anything that matches real well, the closest thing would probably be a Musa 'Manzano'.
Here's a link to it in the wiki:
http://www.bananas.org/wiki/Musa_Manzano
-James-