At the theatre, the TV screen is huge. At home, it's much smaller. At the cinema, you sit in seats with cupholders. At home, you watch on the couch.
At the cinema, they dim the lights for you. At home, you have to take of the lights.
At the cinema, you have to pay for treats (popcorn, drinks, etc.)
At home, you just take it out of the cupboard, but if you don't have, you buy from the store, which is much cheaper.
She could use euphemism it is a figurative language that is used in place that can suggest something unpleasant but in the kindest way possible.