according to the blog post, the father was talking (said "be careful" about a left hand turn) and apparently ambulatory (collapsed on his way into the hospital), so perhaps it wasn't yet considered a severe medical incident yet.
in the post she was told by her mother that father was in the hospital and she could visit him in the morning. This was at 11:30pm, hours after the arrival at the hospital which was within an hour "after dinner"
seems to me the father's condition was not known to be that severe, and well after the "late" arrival at the hospital he was thought to be in good condition. (tho always possible the hospital staff was not keeping the mother informed)