Accustom

[Sarah]

To make familiar by use; to habituate, familiarize, or inure; -- with to.I shall always fear that he who accustoms himself to fraud in littlethings, wants only opportunity to practice it in greater. Adventurer.

[Magaret]

to make someone familiar with new conditions:

[Tina]

Make someone or something accept (something) as normal or usual.