According to a newspaper article I did in researching this case they did receive a letter from her. However, the letter's authenticity isn't totally known.
I wrote about this case and researched it for a few hours tonight. I found a couple things that I felt needed to be pointed out.
Firstly, many people that have commented on this case, whether websleuths or journalists, have remarked that she sent a telegram on the day of her disappearance that stated that she was going to get married. However, the news coverage at the time reported the remarks in the telegram differently. Her telegram said "Got married. Leaving town. Will not be back. Don't worry. Babe."
"Got married" doesn't mean that she was eloping to get married: it means
she already was married at the time of the telegram. Pregnancy seems probable to me. Forbidden love, like with a man who her parents wouldn't approve of seems plausible enough to. It is conjecture but according to the reporting at the time, the telegram indicated that Beverly
was married when she skipped town, not off to get married. That no one knew of a significant other doesn't surprise me at all: teenagers have tons of secrets. If she was married, as reported, then that means she's got a new name.
Also, I came across a photo of her that is widely used in her reports. However, I found the photo that is waste up and not just a headshot. In that photo I thought I could see a ring on her right ring finger. I realize that's the wrong finger for engagement or marriage in North America but I found it interesting. I spoke to my grandma, who remembers the 1940s vividly, and she said that Europeans would wear the ring on the right hand. Maybe that was her husband's custom and a convenient way of hiding the relationship?
I think she left town on her own to be with her new husband, maybe because of pregnancy, maybe because of love, or maybe because of both. I find it hard to accept that she would disappear forever but if the people in her new circle did not know her maiden name and only her new husband's name then that would hurt in connecting the dots. There was a report of communication, albeit with unclear certainty that it was from her. I've included that newspaper article about the communication from her in my own article.
It could be that she left town with her new husband and lived an otherwise normal life until she died. If she died unexpectedly then there would be no chance to reconnect even if she was to develop a desire to.