Just want to get a stamp on this so I have something to point to later, as I can see an argument on pronouns starting.
When you use the E on the asset side, which cards are actually going to their owners momentum when the turn is over and the effect finishes resolving? From my reading, 'this card' is refering to Kid Sister itself, so Kid Sister and the cards you ready are going into Momentum, but I can see an argument that 'this card' is referring to the foundation commited to pay for the E's cost.