The girl's squeal as Nena grabbed the tail was so dam cute! The Fox-Maid just wanted to take her new friend home and keep her there and never let anyone have her and go all super obsessive like she had never done before. But then, when the girl turned around and spoke about letting go of the tail,  Nena blushed softly and did as she was told. Her own tail swishing merrily behind her as she did.
"Sorry, I just got exicted. No idea where my tail came from, and i have never seen another person with a tail, so I just got really super excited" she explained. Then, scrabled around her maid uniform, looking for something specific. And then, producing a rock, and handing it to Sapphire. "Here you go, as an apology. It's a rare item, the Mithril Pebble of Pig-Smiting" Nena exclaimed. It was unclear if the rock was actally rare, or if she just believed that.