Bess lived to the age of 67 and died of cancer. She was living in California and took a train back to the East to be near her family, when it was clear that she was in her last stages. In another of the many strange Houdini coincidences, after having worked with Houdini for her whole life, see him do the Needle Trick and possibly setting it up for him all those years, she died in Death Valley on the train ride back in a town called Needles, California.
This is as bad a picture of her we have seen and must have been ill at the time.

Though there is a place for Bess in the Jewish Cemetary where Houdini is b uried, she is not burried there. She is buried at Gate of Heaven in Westchester. Though she wished to be near her husband, after death her family wisked the body away at burried her in a Catholic being horrified at the possibility of her being buried in a Jewish plot and being denied entrance to heaven. It is not clear if, since she was Catholic, if she would have been allowed to be buried there anyway. Things do happen. After all, Houdini had the only human form in the shape of his bust that appears to have been allowed at his grave site.