She nodded and then set her hands on the box. Then she expelled all the power she had in her and pumped it into the box, and along the sigils Hermes had drawn. The key began gaining the same sigils, and she knew no one save the ones who held that could get in here, or open the box.
When she finished she felt she'd just imploded something and all that was left was a vacuum. She had enough energy to take her hands from the box before she fell back, knowing Hermes was right there and it would be alright if she passed out for a while.