My 16 year old sis is in septic shock i don't fully understand & is it wrong that i don't want to see her?

my sister is 16. she has been in the hospital for 2 days. she got a bad infection, and our parents didn't take her to doctor. Our mom said that because the infection went so long without being treated, she got a blood infection and that's why she is so sick now. Today, the doctors said my sister is in septic shock . They are holding out that she won't go into a coma. I don't know what this means but my grandparents told me it is a very serious blood infection and he could die if she goes into a coma. Also, if she goes into a coma even if she lives it could mean she would have brain damage. At the hospitals, he was sleeping and I didn't go in her room, even though my grandparents begged me to go and see her and kiss her, I didn't want to because I didnt want to look at her like that! they said her kidneys are starting to fail. can she live from a septic shock?? i don't even fully understand what it is. and is it wrong that i didn't go in there and see her.