She glanced over her shoulder to make sure what she was about to do would be concealed from the oncoming ambulance and police cars. Placing her palm over his mouth, she secured his nostrils with her finger and thumb and blocked his airways.
Okay I'm actually not so surprised here because I had questioned it more that she was so concerned about his well-being after vowing to get her vengeance from him earlier in the book. I had been waiting for the payback and wondered why that earlier scene had been significant if all Robert was going to do was die later in a misfortunate run in with a killer.
