Good Question... It would have to be before she was frozen because she will freeze just like a real vampire... I would say it would be half wolf and a forth human a forth vampire... It would be kind of like a lyken I would presume but since it has more wolf then anything it might over power it... Genes are a funny thing to play with... The baby might get more vampire genes or human genes or wolf genes... It is all curcumstantal of corse but it is a good question!!
I think the child will be like Nessie. How awkward for Bella and Edward. Ew, to once think that he loved her mother, then Bella's bestfriend is having a child.... with her child.??? WEIRD AND SOO SOO WRONG!