。
She tugged on my elbow.
Literal
She [topic-は] my elbow [object-を] pulled.
引っ張る is the standard verb for pulling, tugging, or hauling — 引く ('pull') + 張る ('stretch / pull taut'), giving an emphatic 'pull.' The elbow takes を, consistent with the body-part-as-object pattern (顔を見る, 肩をたたく, etc). 引っ張る often appears figuratively too: 足を引っ張る ('hold someone back,' lit. 'pull on their leg') is a common idiom for being a drag on a group or team's progress.