One of the symptoms of PTSD is in fact not seeing a future. I have struggled with that myself so I know the challenge you are describing. Also isolating and having a desire to be "invisible".

A trauma that is significant enough where an individual loses all their sense of control can most definitely damage their ability to see a future and have their own sense of control over their life/presence as a human being. Some very "strong" individuals, individuals that have a strong will and have been survivors can break if a trauma big enough happens to them. You are only human and it can take time for one to regain their sense of self after a major trauma.