。
She suggested taking a one-hour break for lunch.
Literal
She [topic-は] lunch [for-のために] one-hour [possessive-の] break [object-を] take-let's [quotative-と] suggested.
提案する ('to suggest/propose') is a formal verb for making suggestions. とろうと embeds the volitional form of とる ('to take') inside the quotation — 'let's take (a break).' ~のために marks the purpose. The sentence demonstrates how Japanese embeds suggestions within indirect speech.