I found marriage for Scharlottha and Arend and it shows they married 1729 - not 1698
Scharlottha Van Der Werken New York, Marriages, 1686-1980 marriage: 11 May 1729 Reformed Dutch Church,?Kinderhook,?Columbia,?New York spouse: Arend Van Der Kar groom's name: Arend Van Der Kar bride's name: Scharlottha Van Der Werken marriage date: 11 May 1729 marriage place: Reformed Dutch Church,Kinderhook,Columbia,New York indexing project (batch) number: M51101-1 system origin: New_York-ODM source film number: 534198
** you also say she was born after 1700 in Montreal but then you show a twin born same day you show for marriage so you have something wrong there.
I think perhaps you mean that Arent was born 1698 and had a twin - is that right?
I looked for any Vanderwerken/Vanderwanken births in Quebec and did not find anything close to that name.