I'm scared

I recently found out that my aunt was recently diagnosed with breast cancer and my dad said its pretty severe. She's in chemotherapy right now but nothing like this has ever hit me so directly before. If it's happened to my family it hasn't been since I was born. I found out this last weekend and it didn't really hit me that this is actually happening until last night and I've been so emotional all day and this morning in one of my classes I actually cried to my friend after everyone had left, which in truth was kind of awkward considering my teacher just watched me hug my friend crying. I'm so scared and sad and nervous and I don't know what I can do. I want to tell my friends and ask if they'll pray for her but I'm so scared to tell anyone else because I just feel like I wouldn't be comfortable telling people but I'm not sure what to do.