Hi everyone, I've made an account here specifically to say that I knew Sophie (but not Daniel) for many years. I won't be providing proof of this to protect my own privacy, but I will say that we lived on the same road as eachother for about 6 years, and were quite close friends during this time. Additionally, we attended the same primary and secondary school. I'm not exactly sure what kind of questions you may have pertaining to her, but I am willing to answer whatever.
Edit: I will likely refrain from doing so until things become more clear, though.