Not trying to be at all negative here, but please for your sake do not interpret any of this. I can give you a story almost verbatim with my wife, and it all meant nothing. I am sharing this from 6.5 years out, for the first 1.5 year this would have been almost a recurring event. I did my best not to read into it, and even at one point she even implied she is back, but poof, it just took 2 weeks to go from there to saying we should go our separate ways and I did not see her for almost a year.
I think it's great that you just validated and did not engage, well, until you did. I understand the temptation and wish for things to get better, but I would call jumping in "putting your hand in the blender." It may hurt a lot more than its worth. Hopium early on can be destructive, mainly to you.
It's hard, we all get it. But just stay detached, do not engage, even when it seems tempting. A day may come, later on, when she has stabilized enough where you are not being flung around on a whim, rather trying to actually reconnect. This probably is nowhere near that day.
Hang in there.