。
She also broke a glass.
Literal
She [also-も] glass [object-を] broke.
コップ is a loanword from Dutch 'kop' (cup), not English — one of the older non-English loanwords in Japanese, dating from the Edo-era Dutch trade connection. 割る (わる) specifically means to crack or shatter something brittle, distinct from 壊す (to break mechanically).