If she is deceased she maybe try to make you aware that something is about to happen, it maybe something good. If she is living you maybe concerned about something that is going on the involves the both of you. It is also possible that it means nothing. Take care.
Maybe shes trying to tell you, not to "burn the meat loaf"...or maybe she is just a miss placed face in a dream... Or maybe she is just trying to say hello the only way she can... Best wishes