Three-character rendering of French/English "Mo-ni-que."
摩 (mó) sounds like "Mo,"
妮 (nī) sounds like "ni" (a soft, feminine-coded character used almost exclusively in girls' names - same
妮 in
安妮 "Annie"),
琪 (qí) sounds like "que" (a jade-related character, very common in feminine names). The variant
莫妮卡 for "Monica" is much more common;
摩妮琪 leans more dictionary/literary.