"Holy crap! Why am I so tall? Eeeeep! And why do I have glasses? Ahhhh!"
They both make a series of exchanged comedic short screams at each other.
It seems as though EMily can now use Sara's powers, and Sara can now use EMily's powers because of the cellular structure recombination. As such, the weapons dematerialized. And since their knowledge was almost centralized to their own original force, they didn't know how to use each other's powers efficiently. Sara, (now looking like EMily) picked up the shield and took up a defensive position.
So they decided to play it safe and start gathering energy for each other.
Winona had gathered enough energy after those bombs to fire a neutron beam at the demon.
OOC: @Saltyk. It's interesting. I see this is why you PMed me last night about their powers.