。
She took the day off from practice.
Literal
She [topic-は] practice [object-を] took-off.
稽古 is a culturally loaded word — it specifically denotes the disciplined practice of a traditional Japanese art: martial arts (judo, kendo, karate), traditional music (shamisen, koto), dance (Japanese classical dance, Kabuki), tea ceremony, calligraphy, and so on. The word implies a master-disciple framework with established forms (型) to be drilled. 練習 is the broader, neutral word for 'practice,' applied to anything from sports drills to exam prep; 稽古 carries the weight of a tradition behind it. Choosing 稽古 over 練習 tells you immediately what kind of activity is involved.