This is a short video of young Rayna expressing her love for a robot, and giving it a hug. It's not a robot though, it's an abandoned water heater. Regardless, she quickly loses interest in the fauxbot and shifts her attention to removing the manhole cover behind her, presumably to attend a pizza party with the Ninja Turtles.
Keep going for the video.
Thanks to everyone who sent this, half of whom suspect it really is a robot in disguise.