How to say "转瞬间就能狠下心" (zhuǎn shùn jiān jiù néng hěn xià xīn) in Chinese dialogue

zhuǎnshùnjiānjiùnénghěnxiàxīn

[But the next, she could steel her heart]

Idioms & Colloquial Expressions
INTERACTIVE SCRIPT TIMELINE
LINE 0129:20
wēn
róu
shuō
ài

[whispering she loved me gently.]

LINE 0229:21
PLAYING SCENE
zhuǎn
shùn
jiān
jiù
néng
hěn
xià
xīn

[But the next, she could steel her heart]

LINE 0329:24
tuī
xiàng
suì

[and push me into the shards of glass.]

Show Information
Source MediaTV Series
Season & EpisodeS1 E6
Timestamp29:21
TMDB ID283950