In spite of the loud music and many conversations at the party, rachel was able to hear her friend say her name. rachel's ability to hear her name regardless of the background noise is an example of:

This is an example of selective attention.
Rachel was able to hear her own name despite the loud music because she was focusing on what her friend was saying rather than focusing on the music. Therefore, she was able to pick out the sound of her name even though it may have been muffled by the background noise. 

It depends if the restraining order is against you or against some else by you, you always need to have proof of someone, like if someone is abusing you or won't stop harassing you it's always a thing to have proof. When filing a restraining order make sure you list all the things you want the person to stop doing, either it's stalking or harassment, etc.