Bumblebee all but relaxed at the sight of Mikaela, even more so when most of the frantic humans took flight. He would have smiled, if he could, but he could only show his happiness at seeing her through words that were not his own. "I missed you too - It's all the little things she said."
He felt bad that she had to crane her neck so, and he knelt on one knee to offer less distance between them. He snapped his eyes away from her, looking in the direction of the sirens. Not good at all. Looking back down at the female, he nodded, understanding.
He meant to transform into the Camero. Instead, he transformed into a human. As in flesh and bones and a heart that was now beating much faster than what was considered normal. "Mikaela??" Oh, but he had a voice! Wait, was that what he sounded like? No time to dwell on that, it wasn't important when you went from Autobot to...human. "I...do not understand...what has happened, why..."
He was holding out his arms and staring at his hands, his eyes wide as tennis balls and his voice holding fear and confusion. Had he lost his ability to transform? Was he forever stuck in a flesh form? Panic started to take over, and quickly. His breathing increased to the point of hyperventilating and he wanted to hide, to run and try and figure things out, to communicate with Ratchet or Optimus, because they had to know what was wrong. Right?