Titia van der Meulen - Possible match with different parents listed - sister of the mother who died when child was a baby

I have researched this profile and that of Tena De Vries, records show that there was a Titia Vandermeulen living in Illinois and the birth date is the same as Tena De Vries. The birthdates for both are the same, only the death certificate lists Albert and Nellie Beukema as the parents. Does anyone have any suggestions on how to find out if these are the same?

Tena de Vries