Estrangement

I am getting ready to apply for my 2nd year sfe however, I do not have any contact with my family. I haven’t had contact with them for over a year however I only have evidence to prove I do not have contact with my dad which are court papers. I haven’t had contact with my mum for over a year but I don’t have any official evidence other than teachers that know this to approve, is this likely to be accepted for estrangement or not?