person A: A few years ago I lost someone dear to me tragically. It broke my heart and left me feeling like I should have been able to stop it.
person B: I am so sorry to hear about that. It is very hard to lose a loved one but treasure the memories of that person_comma_ especially the good memories. 
person A: It's really hard. She killed herself. I feel like I failed her.
person B: Oh dear_comma_ I can only imagine please stop blaming yourself. I feel your pain.