So the latest issue of wonder-bra/fake-THOR has arrived.
Nothing but a setup issue for the next issue.
She-ra/THOR faces the giants while the hammer is trying to get out of the sealed room's adamantium doors.
Malekith and the Frost Giants are unimpressed with fake-THOR and she ends up swallowed by their leader. Of course she gets free and continues the fight and senses she is losing power.
So there IS a time limit on how long she can be separated from the hammer but it appears to be longer then 60 seconds.
So anyway for the rest of this snooze fest we have Malekith vs the CEO of Roxxon who can turn into a minotaur.
Fake THOR uses her waning strength to pry open the doors, the hammer flies out and smashes the remaining giants even as she starts to depower then returns to her.
Turns out that Malekith is seeking the skull of Laufey. Fake THOR smashes the skull and Malekith vows the frost giants will destroy Earth for this.
However they are all interrupted by the arrival of the REAL THOR, carrying his axe and wearing a cyborg left arm. Of course he ignroes Malekith and orders She-Ra/THOR to release the hammer or face his wrath.
So next issue is Real THOR vs. Wonder-Bra/Fake-Thor.
Which is not admittedly not that hard, since this was the only book I picked up!