Is any of this typical? That she would move on so painlessly?
its a common part of lots of stories here. it happened at the end of my relationship.
one of the things that i realized later in my recovery is that my ex and i were on very different pages toward the end of our relationship, and this can certainly be even more true for someone with bpd traits. it wasnt at all obvious at the time, but the signs were there. what felt like a very sudden detachment from me actually happened in stages, over time, and she moved back and forth...she had doubts. but at a certain point, the safer, easier thing to do was to go all in on a new, budding relationship.
women especially, tend to grieve relationships in stages. so its likely that part of what you are seeing is a person who had on some level grieved the end of the relationship already.
the person doing the breaking up is prepared for it. the person broken up with feels blindsided. it hurts. but being on very different pages, she wont be in any position to acknowledge your pain or help you through this.
On our first breakup she sent out a mass email about me
...
Any advice on how to navigate this would be huge for me.
are you thinking she will do this again, or is she already?