Hello Vixta
First of all welcome to the community.Sorry to hear about family problem. You are in the right place for single holidays. Just You look after you really well. The good thing about a JY holiday is that although you are own, you are never alone. You will be amazed how very quickly the groups gel together.
Yes, it is true, that the first time you go away, you will have niggling thoughts, that is quite natural. Once you have sampled a JY holiday, you will be hooked. Believe me, for someone in your situation, it is the best cure you could have. As for age, it doesn't matter, because everyone has the same motive, and that is to see the world, safely and in good company. It is highly likely that there would be people around your age, and the majority will be ladies.
I hope that you find a holiday that you like and that you go and ENJOY.
Peter