。
She's two years older than me.
Literal
She [topic-は] me [than-より] two-years-of-age elder is.
Another in the family of age-comparison sentences using より plus 年上 ('older'). The number 二 is written with the Arabic ２ here, matching the modern mixed-script convention for numeric content (more typical of casual writing or spans). The plain copula だ keeps this in casual register.