。
She looked at me and smiled.
Literal
She [topic-は] me [object-を] saw [and-て] smiled.
微笑む (ほほえむ) is the native (Yamato) verb for smiling — the warmer, more conversational choice for narrative or casual description. The kanji 微 ('faint, slight') and 笑 ('laugh, smile') together literally mean 'faint smile,' contrasting with 笑う ('to laugh, to grin broadly'). A more buttoned-up alternative exists in the Sino-Japanese 微笑する (びしょうする), built from the same kanji but read on-yomi — the choice between native and Sino-Japanese pairs is one of the language's main registers for adjusting tone.