Some of the ways alienators will abuse and manipulate their children is by making them believe lies that will become foundational to their control.
Here are a few:
Your other parent is dangerous.
Your other parent doesn’t care for you.
Your other parent is unavailable for you.
Your other parent is a bad influence.
Which then leads to the abuser being the “better” choice:
I am the only parent who truly loves you.
I am the only parent who keeps you safe.
I am the only parent who is here for you.
I am the parent who sacrifices everything for you.
And results in the child having feelings of:
Betrayal (towards the alienator) for still desiring their “bad” parent.
Feeling guilty when they talk to or communicate with their “bad” parent.
Only being able to love and interact with their abuser.