I definitely think she should go! Go, and have a wonderful time commenting from the sidelines that is....
She is a wonderful silver-medalist, but I cannot imagine how she would compete at the Oly level again. I must admit, I was never a devotee of her skating, and to call her balletic, a true artist, feeling every note, is guilding the lily. Her musicality was very basic, and for me, she never developed her style past a certain point; she didn't grow artistically. That's ultimately ok, as figure skating is first a sport; I don't expect true art to show up in rinks around the country. Elegance and virtuosity, yes - art, no.
I guess there was a moment during the great Odette/Odile black/white Swan Lake program when she peaked for me choreographically and then I think she coasted on her extension and that damn I-spin ending every program. For me, she doesn't get the crown as the lady who pushed the boundaries of skating choreography out towards new territory. We now see everyone doing the ugly fan spiral (the fire hydrant! haha) and that ugly flat-footed I-spin. Fortunately, her legacy will not hinge on that one move.
I wish Sasha well - whatever she chooses to do. Acting.... not so sure that's her best route. She doesn't seem to have made much of an impact in the industry. Just my 2 cents.