There's nothing wrong with being friendly and certainly concerned about a person's wellbeing. But you are not a professional (neither am I). Your experiences might not fit what's going on in her life.
Of course you can go hiking with her all you like. But I get the feeling you are attracted to her. Don't hide it behind a veil of concern. I'm not saying that you can't be concerned. But there are far too many people out there who offer sympathy and a shoulder to cry on because they are pushing for a relationship.
If this is your agenda, even a little bit, then what happened to your wife and family?