"New" gravestone of Freida, daughter of Jona, from 1901

After adding the photos from Yad Vashem, I decided to look for photos on Beth Lochamei Haghettaot's website, and found one tombstone, photographed after the war. 
http://www.gfh.org.il/Eng/

The text in Hebrew is

א דרח שבט שנת תרס"א

אשה זקינה צנועה

וישרה עלי' יקוננו

בני' במרה הה מר

פריידא בהמנוח

מוהרר יונה ז"ל

ת נ ב צ ה

This is Freida daughter of Jona z"l. She died in January 1901.

So far I cannot find a grave for this woman in my survey. 

In my opinion, it is most likely that the stone has fallen over. Perhaps it was covered by vegetation in 2002 and 2003?