Per your linked article there was a 79% chance that they would stay married. Divorce is more likely when the wife gets sick then the husband but I wouldn't have define her chances of being alone the way you did.

Aw, man. I didn’t wanna feel this way first thing in the morning.

Some years ago, I was in this weird social circle, owing to my partner at the time.
She was longtime friends with a guy who has his own interesting story, but the relevant part here is that he’s heavily involved in college-aged veteran’s lives. (Mentoring, life guidance, helping people transition back.)
During a get-together put on by him, my partner and I met this young couple. They were basically the model of a young, “trad”, Christian couple. Ben had Boy Scout/youth pastor vibes about him, and Sarah was super funny, kind and never seemed to forget personal details. Both were great to talk to, with broad knowledge and experience. He was a bit more Christian oriented, and a bit more conservative, but was earnest and it wasn’t really a thing that came up unless others pressed.
They seemed incredibly happy together, and about a year later, he proposed. A few months later they married. Less than a month after that they were out celebrating Sarah’s pregnancy, a giant SUV ran a stop sign while speeding, and Sarah was so injured she wound up in a coma, but still pregnant, until after their child was born.
She stayed in a coma for a few months after the birth, coming out of it permanently different. They didn’t really go out to events anymore. She was mostly in a wheelchair and didn’t talk. I kept up via social media until I stopped seeing posts from him. He mostly had posted about the challenges of raising their kid alone while also taking care of her, with an occasional news story about the accident/fallout from it.
About 6 months after I’d last seen something, I sought out his socials for an update, to find he’d scrubbed it of Sarah. He’d made new posts the algorithm didn’t show me - his and Sarah’s kid, with a new woman. Sarah’s socials had one update, posted by her mother. She now lived with her mom, and was okay. They were just taking things day by day. That was 7ish years ago?

I guess I don’t condemn someone in their early 20’s for bailing, I suppose, but that situation makes me sad because of how terrible it is for all parties.