I'm in a LTR for almost a year, the anniversary is a few days away. We were planning to visit a botanical festival and then having a nice dinner in a nearby city that's about 2h drive away.

As it turns out, the festival is on Friday instead of Saturday (as I've originally thought) and we won't be able to make it, so I told my partner that it's all good and we'll have dinner at a fancy local place.

And then all hell broke loose, 30 minutes of non stop nagging and trying to drag me in to an argument, I did my best to remain calm and not give in to her manipulations, told her several times to drop it, because I'm not being a part of such discussion. She then turned to personal attacks about how I'm a lazy person not seeking fulfillment and should get a job (I live off passive income I'm getting from renting out properties, currently the money is frozen for the next few years, so I can't expand)

As a last resort she told me I'll be sleeping on the couch tonight, so I quietly started packing my things to leave her appartment instead. Then she broke down, started crying and apologizing for saying all these things in order to hurt me and trying to drag me in to an argument as a whole.

Not sure what to do right now, should I completely trash the idea of celebrating our anniversary, or should I trash the whole relationship, because to be frank, remaining in control throughout the whole tantrum was a very challenging task.