This is an answer to an really good question that was recently asked.
Great Question!! Emotional abuse can be hard to define.
Neglect is when someone refuses to respond to your emotional needs or requests. When someone is not answering you with the intent to 'punish' you for something you'd previously done, this is neglecting your plea for emotional connection.
Humiliation is any action designed to shame or embarrass someone. In the instance where someone is not speaking to you; the intent is to embarrass you or make you feel shame for your previous actions.
The only way that this type of situation wouldn't qualify as emotional abuse would be if your partner clearly stated that they need some space or time to calm down before speaking about it again. Ideally at this time they would also establish a time when they thought they would be willing to try to discuss the issue. Since emotions can run high, this type of communication doesn't always occur.
One thing you might try when this happens is to let your girlfriend know that you are willing to give her some space to calm down, but you don't like it when she just ignores you. If she is unaware that the silent treatment is bothering you, this will give her an opportunity to shift the way she responds when she is upset with you. If she continues to give you the silent treatment then it might be time to consider some professional intervention to help resolve the issue.