What happened to Henny Penny?

I finally received the CT State Diagnostic Lab report back on my beloved chicken Henny Penny. She died of severe egg impaction. So sad. She apparently was an internal layer and for that there is not much anyone can do. (even though I tried) I am sure it was her breed that was responsible – red sex-link- which is bred for high production, but not for a long life. After the 2nd year, egg laying stopped and the occasional broken egg appeared in her nest box. I didn’t know any better. I feel so heartbroken for her. I am wondering if this the road to be traveled for the rest of my hens.