Sounds like a sensible explanation, even though I don‘t really feel that‘s what the writers wanted to convey. But still, wouldn‘t her wormhole only connect Kaminar with the place and time from where she is opening it (i.e. not the far future), irrespective of how long it stays open?Michael isn't very good at operating the suit. The Kaminar wormhole is open for a very long time, well after she departs, while all the others open and close quickly, suggesting that it is a significant tear in space/time.