Most Helpful Girl
Being you both were in this so-called "Break up," your temper got the best of you and seeing she had 'Guys stay the night" when you both were separated, it lead To-------I punched the door and pushed into her room.
Even though you both talked of reuniting, she apparently had other ideas and you felt like this fifth wheel. She most likely began her beguine of getting used to the idea of Not being hooked at the hip with you, became this free bird and with this, brought other sparrows into her love nest, causing you to fly off the handle.
She may or may not have meant to get the Restraining Order, and even if you both would kiss and make up tomorrow, there is no telling if she might do this again or if she could hold down the fort with you in a Real Relationship.
Contact her by phone or by text but I would suggest for now but no face to face. It could lead down a beaten path, a War of the Roses and you might end up getting hauled off somewhere because you would realize, too late, you would never again be two birds of a feather who do stick together.
Good luck. xx
Most Helpful Guy
What you should do if stay away from her, do not contact her, and consider the loss of the ring a lesson learned. If you wanted the ring back, you should have asked for it when you broke up.