Whenever Firefly is happy to see her carrier do you imagine a sinarieno where Starscream would come back she run to him to give him a hug Starscream knows what's about to happen he waves his hands trying to tell Fire no repeatedly and when she's close a slow motion voice of Starscream saying "noo" and Starscream making choking sounds while Firefly hugs him saying she misses him?
It happens specially because of her seeker uncles; since when she was a sparkling, whenever they got back from missions and battles, they would go straight at her crib and start talking to her and collectively hug her because her giggles were the emotional therapy for the seekers. Do Starscream knows about this? Yes, and always screamed at them to leave the baby alone because he had JUST put her to sleep.
So, when she was able to stand, her favorite play was hugging her carriers leg until Starscream couldn't even feel it. And when she was taller than Starscream... she basically bear hugged him everyday and Starscream SUFFERED from broken bones sometimes lol










