Not a lot of interest in this one. And the bio data is sparse.
My best guess is that she was born as Du Pont, and first married Van Doornick, rather than the reverse. Two of the profiles only mention Du Pont. And the profile with Van Doornick as LNAB also has her in the bio tree as Margriete Du Pont Van Doornick
So that leads me to believe that Du Pont was her birth name.
Our current match choice is two profiles as DuPont. We can either accept the lowest number, 170, as the LNAB ID, or else change it before merge to a more proper Du_Pont.
But in any case, it might be best to leave this G2G open and also referenced in the NNS profile, so that we can still have any further needed discussion here on the missing parents and missing first husband as it may come in.