。
She seems to be in better shape today than the last time I saw her.
Literal
She [topic-は] I [subject-が] last-time met time [than-より] today's side [topic-が] physical-condition good-seems.
A complex comparative weaving together several patterns. (1) The standard of comparison is 私がこの前会った時 ('the time I met her last') — a relative clause modifying 時, then taking より. (2) 今日の方が ('today's side') uses 方 ('side, direction') with が to mark which side of the comparison wins. (3) 体調が良さそう uses ~そう ('looks/seems') on 良い — when ~そう attaches to 良い, the form irregularly becomes 良さそう (with the inserted さ). 体調 ('physical condition, state of health') is the standard word for someone's day-to-day wellness state.