No way they didn't get caught

I can't believe they didn't get caught after getting off the plane also i'd hate for it to end with him killing her especially after they left japan because he already killed her husband. I get she wants it to end while she's happy but if she still wanted to die especially by his hands they should've stayed in japan because now he'll be wanted for her murder and even tho they think she killed her husband if they find her dead too they'll assume he killed them both