She accepted his proposal with eyes brimming with tears.
Literal
She [topic-は] eyes [at-に] tears [object-を] full floating, his proposal [object-を] accepted.
涙をいっぱい浮かべて ('with eyes brimming with tears') — いっぱい ('full, brimming') intensifies the tears. プロポーズを受け入れた ('accepted the proposal') uses the loanword プロポーズ. A dramatically emotional moment.