Board Thread:Speculation House/@comment-26226441-20180127223551/@comment-34633327-20180205164424

Christl Rosebud wrote: Wait, i just realised something with this that's so obvious it's rediculous, with what you guys put forth here this means that all Ruby has to do to activate her SEW power, is remember that night...

Problem is, if operating under the idea I put forth, she can't remember that night without ​breaking the mental block. When she so much as remembered Penny and Pyrrha when talking with Oscar, she almost teared up. When she saw Yang after so long, she broke down. Her mind has built multiple mental blocks against that night. She only remembered the night in full when she saw Jaune and Cinder charge each other, her mind thinking it would happen again.

So it isn't as simple as "Remember that night, trigger SEW powers", its more like she needs to break the mental block, and thats only happened when she almost remembered the night, at which point she almost mentally broke down again. So long as the block exists however, she'll only trigger them if she gets, well, triggered.