Move her hand onto your thigh.
From Create Your Own Story
You kept an eye on Adam who to you seemed to be glued to the movie as you covertly move Kara's hand onto your thigh but a rather gory scene made Kara turn into your side and you rubbed your hand soothingly on her back,however,you breathed harshly when you see Kara's hand rubbed your clothed crotch to hardness.
Your eyes nervously jumped to Adam who seems to be glued to the movie before returning back to Kara as she unzipped your pants and grabbed your penis and rubbed the head with her thumb and a small sigh escapes your lips which made her smile as she continued to pump your erection.
You decided to go balls out and reached to touch Kara's breast,at first hestitantly but then with a firmness that made Kara moan but thankfully Adam didn't hear it though you did notice that the gory scene was coming to an end and with much regret you point it out to Kara, who frustratedly lets out a sigh before returning her attention to the movie which left you in a qundary of sorts as you complemented your options when you catch Kara's eye and she dips her head towards her bedroom before standing up and going Adam that she needs to go to her room for a moment, Adam just nods his head before returning his attention to the tv. You wait for a few seconds before standing up yourself and tell Adam that you need to go to the bathroom.