Even if the game is more narrative driven than most other games you play doesnt necissarily mean shes going to be more interested in this video game if the gameplay itself is boring--afterall she will still playing something that requires interaction that's compelling.
Ben gave his honest and informative impressions over at Ars Technica (link below)--check it out and see if that sounds interesting.
I can tell you from what I've played of the game that it's not going to entertain everyone. I think for most people they're going to have to approach HR with an open mind and some patience to really take it in and enjoy what it has to offer. Like Ben states in his peice--the voice acting (at least in the junkyard scene that I played) is fairly medicore and for a game that's really trying to drive home the plot, this is a bit of a surprise. The controls too are an oddity (hold in a shoulder button to walk? Really!).
I think for me the most interesting thing about the game is the game's cast and the concept that anyone in it can die while having a meaningful effect on the narrative. If I recall correctly there are 8 supporting characters and almost all of them can expire in some form or fashion and apparently it's not considered by the game a good (rewarded) or bad (game over) way--it's just how it goes. I like that idea and am interested in finding out how this really works in some meaningful way for the player.
It does have some interesting things to it though, and despite what some people are saying there are a fair amount of quick-time events in the game. I just dont know what to think of the game yet. It has potentiol to be great fun and a great pain in the ass.
http://arstechnica.com/gaming/news/...l-its-not-the-subtle-genius-of-heavy-rain.ars