Alice Through the Looking Glass (2016)

Plot hole: When adult Iracebeth uses the Chronosphere to take Mirana back to fell day, how do Alice and Hatter show up in this different timeline? They can't have acquired another Chronosphere as everything ended when she saw herself.

Red Queen: Hello, Alice.
Mad Hatter: Aaahhh!

Question: When Alice returned to the real world in the end, why wasn't she taken back to the mental asylum?