I haven't seen Phee's posts. I don't think you've done anything wrong, San, just be concerned and show compassion for another person :)
Sometimes Relationships threads can get into a pattern of intensity which is a bit of a red flag for those of us who have been around these boards for a while. When things go off board, for me, is my line in the sand now. Often it's not that posters questioning are claiming that the entire story is a lie (though, there have been cases where this has happened) - sometimes it can be that a story is partly true or even mostly true but the poster is feeding off the drama and sympathy of others and hence posting isn't actually helping them move forwards because it's allowing them to keep wallowing in the drama caused by the fact that so many people are waiting for updates. It's not that they don't need or deserve sympathy, but that others get caught up in something that ends up taking away from their own lives. That's why MNHQ has the wording in their warning about "not giving more, financially or emotionally, than you can afford to spare". It's good advice. If you're getting too invested or involved in a thread, it's okay to step back. There are enough pairs of fresh eyes and posters on this board to fill in the spaces. If you're not getting too invested but feel okay to continue supporting, then fine. It might have been that posters were concerned some supporters WERE beginning to give more of themselves than they could spare, if that makes sense.
As said, I haven't seen the posts in question, so I don't know what happened there or what the motivation might have been to be questioned. I just saw that you were feeling wrongfooted and I wanted to say, don't. It's never wrong to care about someone enough to ask after them, and I hope the poster in question is okay too.