first time in London for a 12yo kid

finally bringing my daughter to London, her first time. She is 12yo. Her english is not great.

We land on thursday evening at 5:50pm, leaving on sunday at 15:30. So 2 full days, and another half a day. Will stay around Victoria Station.

Haven't dug into it (I was thinking obviously to London Eye, Natural History Museum, river boat), however I would really welcome any suggestion you might have. She likes stuff that kids her age usually like. So far she has travelled to Paris, Portugal, Africa.

thanks in advance.