Tā zǒngshì dānxīn jiārén huì yǒu sānchángliǎngduǎn.
She always worries that something bad might happen to her family.
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culture
三长两短 literally refers to the three long and two short boards of a coffin (before the lid is placed). It's a euphemism for death or serious misfortune, often used in the pattern 万一有个三长两短 ('in case something terrible happens').