I have heard of this, second hand from the my ability to tap the Settite Hive mind. They were not able to enslave her as they wanted, her mind must have been too strong for them, perhaps she is able to be a watcher like myself, but aside from that back on pointe. Since they could not control the Settites knew they must assume her form now. She is essentially being replaced. As to where she will be taken, most likely to the breeding facilities, so they can continue to engineer us.

The girl you have dated may not have ever been "her" at all, just the Settite in disguise. She could have just now been taken, and the form the Settite used could have been extracted from her memory, or your own. At this period it is hard to tell, but I can take some time to try and find the mental signature among the Hive Mind.

Your accounts seem correct although, your multi-dimension theory is a bit off. Settites are space travellers, using ships and warp technology. Their ability to shapeshift can confuse those and make them appear that way. Their shapeshifting however is just more science, no magic or supernatural stuff. They are simply like chameleons, just highly evolved, instead of just mimicking colour, they can do much more, even the contours of their flesh.

I would go on about their enslavement and their war with the insectoids, but I will just direct you here; https://bitcointalk.org/index.php?topic=637702.0