Emotional Insecurity is a feeling of general unease or nervousness that may be triggered by perceiving oneself to be inadequate or unloved.
Insecurity is a tricky trait to recognize because it can manifest in many different ways. It could result in shyness and social withdrawl. It could even result in bullying or aggressiveness due to compensating for a overall lacking feeling. An insecure person withdraws themselves to a certain extent.
Common traits of an insecure person:
anxiety
uncertainty
confusion
Does she say that she feels inadequate? Does she require constant reassurance?