Jozsef Klein - Maybe need to resolve conflicts and separate out this family

The death card of Vilma Klein Fleischman states that she died on 22 September 1909 in Budapest at the age of 84 as a widow of Josef Klein, who died before 1909. Only her son Gyula and his family are listed, but no other siblings.
On the death card of Adolf Kunstadter 1881 Vilma is mentioned as his mother-in-law. Adolf's wife; Elisabeth Klein died according to the tree in 1917, so 8 years after "her mother"? Why is she not listed as a daughter? And what about the other children?
I still searched if I could find a marriage between Josef Klein and Maria Heller but found nothing. Hopefully the profile managers can provide clarity.

Just going through JewishGen records, I updated Wilehlmina Maria Klein's profile, This includes her daughter Erzsébet Kunstädter and, consequently Adolf Kunstädter - so I merged the 2 trees: Jozsef Klein's with Adolf Kunstädter, added by Balázs Déri
What I don't understand in your input, Angelique, is what "other children" are you asking about ?

What I don't understand is that the obituary of Wilhemina Klein Fleischmann only mentions her son Gyula and his family and not her daughter Eilzabet Kunstadter Klein with her children.

Wilehlmina Maria Klein

see also the obituary of Adolf Kunstadter, there is his mother-in-law as Vilma Klein Fleischmann x Josef Klein. There are also more brothers-in-
law named Klein

https://dspace.oszk.hu/handle/20.500.12346/209587#

Can Josef Klein x Vilma Klein Fleischmann and Josef Klein x Wilhelmina Klein Fleischmann also be different people? that happen to have the same names?

Right, Randy. But where can we find new / updated sources ??
(Sorry for the long wait: health reasons)