The battle between Vale and Loki alerted Asgard in its entirety. However, even then, it wasn't possible for anyone to reach Vale for help because of their rapidly changing position. The plan enacted to keep Thor safe from outside influence had now become a problem.
Still, the entire armada of Asgardian soldiers rushed over to the Sanatorium and was working together to find the chamber where Thor was being kept. In the meantime, Vale was kicking Loki's ass over and over again.
This wasn't surprising at all. After all, ever since being resurrected Loki had just been focused on manipulating others to achieve his means. After all, it was his speciality to get dirty work done without getting his hands dirty.
