There is a difference between being judgemental and being discerning. You aren't labeling anyone or punishing them when you're being discerning. You are simply being perceptive and aware of people and situations you encounter.
In this case I think you already know what you should do...all the signals are there.
The trouble is, back when you were a JW you learned that it wasn't enough to be discerning you also had to put a label ( weak, apostate, Df'd, DA'd) on people and be part of a personal punishment that was handed down to them from a man made authority whether you agreed with it or not.
That isn't the case here. You aren't going to insist that this womans friends and family snub her, you have made a decision that the direction this woman is heading, isn't one that you want to be involved with.