彼女によろしく言って下さい。

she; her; her; girlfriend; sweetheart

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

well; properly; suitably; best regards; please remember me; please treat me favorably (favourably); please take care of; just like ...; as though one were ...; by all means; of course

to say; to utter; to declare; to name; to call; to go (e.g. "the alarm went ping"); to make a noise

to give; to confer; to bestow; to kindly do for one; to oblige; to favour; to favor