how do i tell her no?

alyssa(:

me and my hubby are currently living with my MIL after we ran into some financial issues.

my hubby has a 16 year old sister who is always asking me if she can come into our room and play video games on my husband's computer while he's at work... I would not mid this, but when she plays her games she will scream at the top of her lungs to other players, usually cursing every 4 letter word you can think of. and she will stay for hours.

now I under no obligation have to let her in our room, but I don't want to come off as harsh to her.

tell me how you would tell her kindly that she can't play video games on the computer anymore, I'd love the advice 👍