To The Wolf:
The Torah says there were ‘Teomim’ in her womb – and you are translating that as ‘twins’. However a more accurate translation/definition of the word ‘Teomim’ or ‘Teomos’ (feminine) is ‘children of a multiple pregnancy’ whether twins, triplets or more.
The proof I think is from a Rashi in last week’s sedra talking about Binyomin’s birth where he brings a Medrash that unlike the other brothers with whom only one ‘Teoma’ was born – an extra ‘Teoma’ (i.e. a triplet) was born with Binyomin.