<human>: Here's what happened- 

Our family always heads out to the cabin for the 4th of July. My older sister and her husband, my younger sister and her friend and boyfriend, and myself all got there early. My little sister's boyfriend decided to dive off the end of the dock. She told him not to but he did. When he didn't come up after 20 seconds or so, we told her to find him and bring him up. His lips had already started to turn blue and he wasn't responsive. Her little 5'1 110 pounds pulled 6'0 him to shore, where my older sister and I started CPR. The paramedics arrived and airlifted him- he has a broken vertebrae and a pinched nerve. As it stands now, he's paralyzed from the shoulder-area down. Little sister thinks this is her fault- for inviting him, for not doing more to stop him from diving, etc...I just don't know how to comfort her right now. Has anyone been in a similiar situation? What helped, what didn't?

Can you give me the gist of the text in a nutshell?
<bot>: Sister's boyfriend dove off the dock and is currently paralyzed. She blames herself. What do you do to help her?