[TOMT][BOOK] Story of a girl who is the primary carer of her mum in their rundown home, she sets traps to know if anyone else entered the home, one day there is a group of people who take them hostage in their home and they think they're terrorists, but in the end it was all for a protest.

There is also a paragraph or so at the start explaining why she doesn't take the bus after school, because it's too unreliable and if she's 1 minute late her mum will panick.

I think in the end they write stuff on balloons and throw them outside?

I think the "traps" she uses are pieces of paper and leaving dust on the floor.