Oh my... what a beauty she is !!
I too have some 6 mos old ferals that I'm rehabbing... hopefully for adoption later, but right now, they are forming bonds with us that are just amazing. Same like Saki reacts... Phoebe (Little Bee) comes on our laps and squirms around, purrs so much she actually drools !!! She's a love muffin, but when were walk towards her or certain other movements, she freaks out....but.... she's coming along.
I hope you find your other two kitties !!!