I would say that she was Jewish - and a Bat Kohen from both the hands and her maiden name.  I think it is very unusual.  I have seen many Jewish gravestones, especially Reform without Hebrew.
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Sarah L Meyer
Georgetown TX
ANK(I)ER, BIGOS, KARMELEK, PERLSTADT, STOKFISZ, SZPIL(T)BAUM, Poland
BIRGARDOVSKY, EDELBERG, HITE (CHAIT), PERCHIK Russia (southern Ukraine) and some Latvia or Lithuania
https://www.sarahsgenies.com