Assuming she wants to go out there's nowhere to fucking go, the UK is a underfunded shithole with no community stuff. Almost all outside activities are too expensive, kids don't want to "just walk in nature" like crazy people in the replies are saying.
They're cutting off her ability to socialise online which to some people is preferential than dealing with dickheads irl , tonnes of kids entire social lives are online if they're introverted and that is okay.
"Watch TV" - TV is dead, "Watch Netflix" - Better hope her family can afford the increasingly insane subscription , "Play Video Games" - theres no way restricting gaming time like China isn't next and they're already removing social aspects of gaming for kids.
BBC: “What was your screen time?”
Student: “Nine hours.”
BBC: “You’re gong to have a lot more time to fill. What will you do?”
Student: “Stare at a wall.”