Dd is our eldest. Age 14. A good kid, apart from the occasional strop. She has a lovely group of friends, who have recently made friends with a group of boys we havent met. Up until now shes always been up in her room playing video games . Her friends and these boys now meet most weekends to hang out in town , go to the cinema etc. I know this is all normal stuff , but how do you deal with setting boundaries? So far, we've said she must be home by 6, we must know where she is (we have find a friend so we can see her ) and know what shes doing. Ideally I'd like to meet the boys but that's probably not going to happen. 
I keep an eye on her phone and can see from the group chat with the boys that it all seems ok. They are just swapping memes etc.
I've talked to her about being careful of the company she keeps but at some point we have to let her use her own judgement. She is sensible but not worldly.
DH suffers from anxiety and gives me a hard time when shes out. We could see she was in a local park the other day at 5.30 after dark and he was like a cat on a hot tin roof. I have to manage that, as well as this new experience of DD spreading her wings . I manage it by telling DH to cool it and saying she will be fine. But I keep doubting myself. We live in London which perhaps doesnt help as DH keeps showing me reports of stabbings. 
How much freedom does your 14 year old have? How do you manage the inner voice of panic when they are out, or is that just me?