Okay so context: Me (20F), my friend (we'll call her G, 21F), and my other friend (calling her A, 21F) have all been friends since high school. We were super close back then, and have maintained this friendship ever since, but it hasn't been as close since graduating high school. We still keep up via a group chat from time to time— it's one of those friendships that don't need much “maintenance”, and where time apart doesn't really affect our love for each other and I'm really grateful for that, and having them in my life.
Anyway, cut to now. A has recently come out with having just started going to therapy, which is great for her. We all sort of knew that she had unaddressed issues and trauma, and are really happy and supportive of her for getting help. However, we never quite knew how deeply or the lengths of the trauma until now. G is in a vent group on facebook, that A is also in. We're unsure if A knows that G is in that same one, because A had just posted a long status asking for advice on a difficult situation she is currently in. Out of respect for her, I won't be going into detail, but the aforementioned trauma was something she has been dealing with for the better part of 13 years.
Seeing the post was the first time we had ever heard about the extent of her situation and the severity of what she was going through, and G and I are having a hard time figuring out what to do. She is still in her situation and her vent post was about her uncertainty to leave a toxic environment due to manipulation. We intend to reach out and tell that we've seen the post and are there to support her, but is this the best course of action? We're fearful that we might push her away. She has always been very skittish, and as close of friends as we are, there must have been a reason why she didn't tell us, or at least hadn't felt ready to.
TL;DR Friend posted something on facebook that she didn't think anyone in her immediate circle would see, found it by accident, and we're worried about it and don't know how to approach the situation.