It should actually be easier than developing an Android app.  And the .NET background should make it relatively simple to work on the front and back ends with Windows Phone.  Windows Phone lets you use the Silverlight framework for development, and you don't have to deal with all the fragmentation issues that you do with Androids development.  I think you will be fine, your folks have worked with most of the same tools they will be using for Windows Phone development, so it isn't as if you have all that much new to learn.  Good luck with it.