When did she come to America?
Dénes, Gömör és Kis-Hont megye, Hungary
map of the above megye:http://lazarus.elte.hu/hun/maps/1910/gomork.jpg
Úhorná [ gemer. region]
1773, 1786, 1863–1900 Uhorna, 1808 Uhorna, Uhorňa, 1902–1913 Dénes, 1920 Uhorná, 1927– Úhorná
The "Denes" on Gomork map is in right margin by Szomolnok [Smolnik] and Stosz [Stos]
Can HEISER be HAJZLER? This surname was in 1995 in Uhorna in Spis region.
You know her birth date? Did you look in Family Search?
To me, the surname HEISER has German roots.https://en.mapy.cz/zakladni?x=20.6645449&y=48.7128445&am...
This location is in Spis region now. A little confusing being that there was a location Denesfalu/Denesfalva.
What is the earliest census your HAJZLER ancestor shows up? Do you have her church marriage record?
who went where for church servicehttp://www.radixhub.com/radixhub/gazetteers/1877
the village has 140 inhabitants. It does have a Roman Catholic church and a cemetery right by it.
Did you look on this NY EI arrival? Might he be your ancestor's relative?
Ihnat, Janos Denes/Hungary 17 1893-1894 1911