Babysitter - Now Hiring

Hello, We have 2 independant teenagers , one is 17 yo and is driving and the other 16 yo; I will need to go overseas for medical treatment for 3 weeks and my husband will hace a work trip for 2 weeks during the same time , we would need someone to come and check the kids in the evening to see that everything is going well, maybe sometimes prepare meal , and be there in case of emergency