PSA: Always get a new job offer in writing

In March my wife had her former boss send her an email out of the blue telling her that she wanted her to come work for her. She liked working with this person so a week later my wife went to visit the place and got the spill on the job.

They made a verbal offer that was a good bit more than she makes now and she verbally accepted the offer. She told me she was going to put in her 2 weeks notice at her current job and I told her to hold off until she had everything in writing. Over the few weeks they play phone tag and then she sent her the company's handbook. But she never gets anything in writing. 3 months later still nothing in writing and only fed lines of the company having a new HR and such. My wife finally gave up contacting her. Stressed her out over a job she never even pursued and got her hopes up over nothing and thank god she listened to me and didn't put in her 2 weeks notice.