Hot step sister was fucked by stepbrother in his bed

A step-sister and step-brother shared one bed and her mom was sleeping in a separate bed. Her stepbrother was tapping his dick with his butt. Once, his mom woke up and went out. Both of them removed their bedsheets, and she started to touch his hard cock and give him a sexy handjob and hand on his dick. And then he started doing cowgirl sex with her cute pussy.