Maybe she used to have crowns and when they were replaced, the gap was enlarged. That happened to me (though not to this extent) when I had to have replacements installed.
Caused by not giving enough blow-jobs.
Take heed, ladies.
I had adult orthodontal work that included palate widening. I had surgery and then had to crank a spreader to widen my palate. It opened up a full 1 cm gap between my front two teeth over the course of a month or two. But obviously I had braces at the time which act as a kind of “under construction” sign.
No it is a midline diastema. No missing teeth.
She used to place a removable appliance when she was working.
Sorry, by “she” I meant the woman mentioned in the OP, not the venerable (but not dead!) Ms. Hutton. 
I’m not sure why, but in my 40’s, a gap started to appear between my front teeth. It went from barely noticeable to big enough to shove a toothpick through in a few years. I hated it - it wasn’t my smile when I looked in the mirror. Dental care is expensive, and I had no benefits at the time and could not afford to do anything about it, so I just had to live with it.
When I finally got a job with dental benefits, I started on the journey to fixing the gap in my front teeth. Turns out years of bad dental hygiene required periodontal care and once that was under control, I was able to see an orthodontist and get rid of the gap. My benefits didn’t cover everything, but did cover a significant portion and without them, I would never have been able to afford any kind of dental care.
Periodontal disease can get anyone, even people with good dental care (I’ve had good dentistry forever, and brush 2x a day, and see the dentist, etc. Still have it; I was damned because BOTH of my parents have the condition. No escaping.). I believe that there are a number of risk factors, and also I have read that there is a bacterial component. Theoretically it could be spread by kissing. Bleh.
If my recollection of the medical literature is correct, such a gap indicates that the woman is extremely lustful and promiscuous.
Chaucer was a doctor? LoL!
It’s also true that dentists won’t let you near their offices when you are pregnant. I never could get a logical answer as to why. So any dental issues that she had were forced to wait, and she probably won’t have the time or money to deal with it until the child is at least four years old.
I didn’t know you knew her… or Ms. Hutton. Do say hi… 
Yeah, I can attest to this. Before I found out I was pregnant I realized I had a cavity and made a dental appointment for April 3rd. I found out I was pregnant on April 1st. When I got to the dentist they cleaned my teeth but refused to do anything else and it wasn’t until my daughter was about 14 months old that I was able to go to the dentist again, this time with a root canal instead of a cavity.
This is out of line and uncalled for in this thread. Don’t make sexual comments in threads not about them again.
Can’t speak for all dentists but we work on pregnant women all the time. Have to change some things but can do almost anything.
I’ve done root canals on pregnant women. Extract teeth and fillings all the time.
Now at the very beginning we try to limit all work, medications and radiographs but it depends on the situation. If someone walks in with an abscess, swelling and pain even during the first trimester the are going to be x-rayed and get a root canal or extraction. Is such work stressful to the baby, sure. Is an active infection worse, of course. It is all judgement.
If someone is at 8 months and say they want veneers on all their teeth to look good in the delivery room, it ain’t gonna happen.
Generally work is to be avoided in the first trimester and last month but pretty safe the rest of the time.
Ignorance fought. Thank you!
Thank you, Gatopescado. It’s about time *somebody *here brought science into the thread. 
Well, good then. No worrying about tooth gaps for me.