Anger

"Oh darling, let me tell you exactly what you did wrong ri..." before Rarity could finnish her sentence the stallion before her interupted.
"Dont you dare speach down to me just because you know the princesses! You are noone but a dressmaker!" his voice echoed strong in the enclosed cave.
Cocking an eyebrow the mare raised her head, staring coldly at him, taking a single step forwards. At the instance her hoof rested upon the stone floor he backed two steps. Her horn got surounded by a blue aura as she took a second step forwards, and him yet a other two back.
"Oh sweety, not only did you scare my sister, you harmed her! Let me just inform you about this, none of the princesses know that im here, nor what you have done. She is wounded beyond what any pony should have to endure. However, I will make damned sure that you feel twice what she have. You wanted my atention? Well, congratulations darling. YOU. HAVE. IT!" Rarity said in a calm, unnerving manner.
Without any other words spoken the magic around the mare's horn expanded ...