err, my #5-6 predictions above, is not actually my theory of what will happen.
if yo go back and look, Clare CAN Partially Awaken over and over again, however, when Clare sends her Huge Blade Arms at Priscilla again, they STRANGELY STOP just inches from Awakened Priscilla's face!!!!!
So, my theory is this:
Teresa/Jean/Rafaela/Irene want Clare to NOT kill Priscilla, yet Clare keeps trying to attack/kill Priscilla. Thus, they try to stop Clare, by preventing her from being able to Partially/Fully Awaken, thus Clare now has this mental "wedge/block/limiter" preventing her from Partially/Fully Awakening.
Instead, Teresa/Jean/Rafaela/Irene, want Clare to SAVE Priscilla, to revert/de-awaken Priscilla, back into a Claymore, like how Clare had done for Jean, how Raki, Galatea, and Jean had done for Clare, and how Rafaela had tried to do for Luciela.
Seeing the brief "returns" to humanity in the Awakeneds, Isley, Riful, Luciela, Alicia, and Beth, it seems to be suggesting that in fact Awakening IS reversible and not permanent nor ir-reversable. Thus this is what Teresa/Jean/Rafaela/Irene want Clare to do, to reverse Priscilla's Awakening, changing her back into a Claymore, and not merely killing Priscilla. As long as Clare keeps trying to kill Priscilla, she will be preventing from doing so, by preventing Clare from being able to Partially/Fully Awaken.