Now that the headstone has been placed, you are welcome to visit Jennie's grave at Beth Israel Cemetery (426 SW Taylors Ferry Road, Portland).  Her grave is up the hill from the parking area, near the top and to the left, close to the treeline.

It is not customary in Judaism to leave flowers at the grave; instead, visitors are encouraged to leave a small stone as a sign of remembrance or respect.

(Thank you to Megan for sharing her photo.)