Home alone (Alberta)

My friend is going to Punta Cana for a week with her bf and plans to leave her 2 children alone by themselves. 1 is 14 y/o and 1 is 10 y/o. I deeply am concerned with this as I feel like it would be too much for a 14 year old to care for his sibling for a full week. No one would be watching them but themselves and it seemed to me that this is so wrong. I’m so torn to call the CFS.