He was nothing more than an inconvenience to her, something that could easily wait until later to take care of. The adrenaline running through her veins for the last few days, all the fighting and the combat - she was numb to his existence. To him though, it was everything in this lifetime. He awoke in her ssock, he recovered his ability to move beneath her toes... All he could breathe was her foot's odor, all he could taste was her sweat, all he could see was darkness forsake the few times she accidentally tortured him to a climax. It was hard not to die in there, but he was safe enough... He found some fabric the moment he could move that was torn enough for him to secure himself to...
While she fought to save the galaxy, He fought to keep himself secured in place within her sock.
He could hear the chaos, the muffled noises of combat and the screams. She fought, he stayed. He had no idea how long he had been there, only that he was growing weak the longer she fought. There were times of calm and times of action, the sound of explosions and the screams of death... Her running around, kicking and blasting creatures away alongside her comrades in arms. To him, the entire event was shrouded - He was nothing more than a pebble inside the Black Widow's boot...
Slowly though, his grip began to fade... As she struggled to fight against the hordes in Wakanda, Mathew's struggles failed - Nearing the end of the battle, the little one slipped beneath the ball of her foot. Time seemed to slow there - He felt every bit of her slick sweat, tinged in adrenaline... The warmth radiated over him as her soft skin pressed into his body, with the wet sock on his back. When her foot came down from her kick, he felt every millisecond of the event... His body slowly compressed, bursting beneath her as the ball of her foot pressed down on the ground. Her heel came slowly to the floor, but all of her weight was on him for just that second... Enough to flatten him entirely within her sock.
The battle raged on, and when it was all said and done - when there was nothing more to fight... He was reduced to nothing more than a smudge of discolored sweat and grime...
And Natasha never knew...