I have one suggestion. I would change the name to simply, "Girl with a Heart" or something similar. Having the syntactically incomplete phrase "Girl with a Heart of" is really awkward for me to read and handle, as my brain is looking for it to be completed, in an annoying way. I get that it's part of the gameplay, but having a name like that is very uncommon, and could cause problem with the game spreading. For example, if someone says to their friend, "Hey, I just found this game called 'Girl with a Heart of' ", then the listener will immediately notice the incompleteness and either believe they misheard or that their friend didn't finish. Also I'd bet that they will explicitly mention it, like "...Just 'Girl with a Heart of'? That's weird.", or something. It will put an extra step between them playing it or asking about the game itself.

Also, will the OS X version work for a PPC processor? If so, I'll buy it!