She studies hard as always.

Literal

She [topic-は] as-usual well studies.

Same 相変わらず frame, here paired with the adverb よく ('well, often, hard') and the verb 勉強する. Note the よく has a double sense: 'often' (frequency) or 'well / hard' (quality of effort). Either reading works for studying — 'studies often' or 'studies hard.' Context typically allows both.