She has always been very discreet in her business dealings with me.
Advanced English Dictionary
+adjective careful in what you say or do, in order to keep sth secret or to avoid causing embarrassment or difficulty for sb Synonym: TACTFUL He was always very discreet about his love affairs. + You ought to make a few discreet enquiries before you sign anything. + A discreet glance at the clock told me the interview had lasted an hour. discreetly adverb: She coughed discreetly to announce her presence. WORD FAMILY discreet adj. (=/= indiscreet) discretion n. (=/= indiscretion)
Random quote: You must do the things you think you cannot do.: Eleanor Roosevelt