Is It okay to leave a fifteen year old alone for about 3 and 1/2 days?

california laws: I'm thinking about Leaving my fifteen year old for 3 and 1/2 days,since she really does not want to go to a funeral with the rest of the family, i would be calling her about every 30 minuets,She is very responsible and she really doesn't want to be in a hotel the whole time not for a few reasons,she knows how to cook and i might just ask one of our neighbors to go over every once in awhile to see how she is. I wasn't much older probly 16 when my parents left my brother and I alone for about that amount of time,but she is an only child,but she might also stay with a friend for a day.