Please explain some things to a newcomer

[Calypso]

I would just like to thank all of you for answering my third question, and for going to such lengths to prove your points, too!

[peter]

Yes, Peter. But your mum is not Mince's mum so you cannot be siblings.

Yes but she is a ancestor to both of us

[Vulture]

Yes, Peter. But your mum is not Mince's mum so you cannot be siblings.

Yes but she is a ancestor to both of us

Yes, but you are next in line to your mother and Mince is once removed. Mince is NOT, in any way, shape or form, a sibling of yours.