IN the hit tv show" Once Upon A Time", Lilly {Milifacents daughter} and Emma switch fates befor they were born but did they switch lives as well?

Iknow this a wird question but anyway. There are theory that state this but is this true? the facts include Emma looking like mal and lilly looking like snow but we havn't meet lillys father and emma looks like her fathr soooooooo, thanks Iknow this a wird question and if you can't anser it is ok and i incurage you watch it and sorry for spelling too♥♥♥♥