Two sister mice

"Thank you. You will receive two mice. They will be sisters and very close. That's the end of your order. MANDY and Kate will be delivered within a week, they are unaware that they are robots and will restart programming if told. Good-bye." And with that 500 pounds went from your account and you couldn't wait for Mandy to arrive.

You are sitting in you kitchen three days later when you hear a knock on your door. You hadn't expected it to come this soon so you walked over slowly expecting to see the post man. Instead there was a woman in uniform and a curled up gray two mouse-girls on a trolley beside her. "Mister Joe Dane?" She asked.
"Um.. oh, right. Yeah that's me." You stutter in reply.
"Your order is here. They wake when you say their names. Here's the manual in case there's a problem. Just tell them they're robots if you want them to restart. They wont question how they got here so don't bother to explain. Got that? Good, sign here please and happy fucking." As she walked away you hear her mutter "pervert". But you ain't bothered. You wheel in the sisters and pull them onto your sofa. You had done what they had said and made a room for them under the stairs, so now all you had to do was say their names.
"Um... Mandy, Kate" Their little eyes shot open and you step back startled. One looks around while the other stares at you, they both clutch each others arms.
"Are you a friend?" One asks?