The Status of Donald Trump's First Wife

[edu]

This web site https://www.medadmbjmc.in/was-ivana-trump-religious/ claimed she was Jewish.
Rabbi Yair Hoffman at https://www.theyeshivaworld.com/news/headlines-breaking-stories/2106258/may-ivanka-trump-sit-shiva-for-her-mother.html claims

This author had heard it on good authority that the former Ivana Zelnikova may have been halachically Jewish and could be considered a safaik in this regard.

Does anyone have further information?
In particular, there's a question how much outreach should be done for Trump's 3 children from this wife.

[Joe Gutfeld]

Invanna Trump died.