。
She thinks of everything in terms of money.
Literal
She [topic-は] anything money [into-に] convert-and thinks.
換算する is the precise verb for currency or unit conversion — translating one quantity into another's terms. Used metaphorically as it is here, it suggests a kind of mental accounting where everything is reduced to its monetary value. The te-form 換算して links the action to 考える, framing her thought process as 'first convert, then think.' お金, with the polite お prefix, is the warm everyday word for money; the formal Sino-Japanese counterpart 金銭 lives in legal documents, news writing, and discussions of monetary value as an abstraction.