Yes! You can block her main posts and just get the important ones. You have to find one of her posts on your wall and then click on the down arrow on the rightish side of her post. Then select "Only Most Important" and that will move less relevant posts and hopefully only give you the most important ones (i.e. not her shares and stuff like that).
It'll take a little tweeking. I've blocked game updates, for example, by just blocking the application. So, even if 100 people are playing the same game, I just don't get a status update of what cow they purchased or how many points they just scored.