At a loss

Amy • Mom to 4 beautiful girls. 3/3/10, 4/27/14, 4/8/17, 3/7/19.
I'm currently waiting on my third kiddo to make her entrance. She's 2 days late. Today I found out on my good friends lost her only son (7) in a house fire while at a sleepover. I don't know how to be there for her I feel guilty patiently awaiting the birth of a new life when she just lost her whole world. Any advice? I don't know how to comfort her 😭