Alita is a person who is not involved at all in Thomas' plans.
The Vampire Girl was furious, she didn't dare protest against Helios or Thomas, so she followed Morgan wherever he went and spied on him. Alita is determined to come along. She doesn't want to be a weak royal princess, she wants to be strong and not be underestimated by others.
As a result, Alita followed and looked for loopholes so she could sneak up behind Thomas and Morgan. She was already skilled at this, Helios even raised his hand with her escape program when Thomas was hit by the White Wizard's curse.
But now it was different if she ran away following the present Thomas. They didn't go to the five regions of the Megalima Kingdom but went to the Underworld. Her uncle would probably die standing up because of it.
Alita doesn't care, she will go with them wherever they go. The Vampire Girl slipped into the grocery basket and hid before Thomas's party arrived.