Post Office Jindekde

Maeve Abenthy is alive in the world, where mail carriers use the magical art of scriptomancy, with the help of which they lend a special quality to the written text, supernatural abilities, that it will cause, that the recipient of the letter, for example, will experience the memory of the writer, feel his emotion, or a bony hand jumps out of the letter and starts strangling him. It depends on the specific grapheon - the magical scriptomancer subscription.
Maeve Abenthy hates her father, a scriptwriter who destroyed an entire world seven summers ago. There are only two worlds left and you can move between them. However, only the chosen few - the couriers of the Jindekde Post Office - are allowed to do this. Maeve's life is worthless - first the orphanage and then one escape after another, no home, no friends. But then she receives a lost letter from an "old friend" who claims her father is innocent and can prove the truth. Maeve has to track down the letter writer and the trail leads to the former Scriptomancy Academy, now the Jindekde Post Office.