"Alright, now this may be a bit more then uncomfortable, but bear with me..."  Amy once again used two fingers, sliding them between the girl's asscrack.  Slowly, she used first one, then the other, to press against her anus, spreading the hole wide enoug to fit both fingers as she felt around inside.   Subtly, she pumped the fingers, spreading them slightly to text the flexibility of the hole.  "You take  very good care of yourself, Kanami.  I just need you to relax a bit more, you are too tense to be able to do this accuratly.  Spread your arms and legs out spread eagle, it might help."  Amy wondered if the girl would call her bluff, or be too eager to please her, as she had been lately.