It's not clear why the second lady is so indifferent to a fuck in front of her? And the little black lady - they took it out on her ass and she continues to lie there quietly and doesn't run to the bathroom to wash up? Maybe she means that she fantasizes about sex, but nothing really happened.
The girl was working out her own hole, enjoying herself. The partner would not just look at it all, so he set up his shaft for practice. She did not refuse, quickly serving him.