Why did Katherine Waterston's Tina Goldstein vanish from the 'Fantastic Beasts' franchise?

Katherine Waterston Confirms Return To ‘Fantastic Beasts 3’ After Mysterious Absence In Promos

EastEnders spoilers: Drunk Linda returns and ruins Tina’s funeral?

EastEnders SPOILER: Linda Carter RETURNS as heartbroken family say goodbye to Tina at her funeral