I don’t think anyone addressed this yet, but you said a 500 calorie day is “one chipotle bowl”. If you’re referring to Chipotle the restaurant, I did a quick google search and found this.
“Burrito bowl with chicken, fajita veggies, lettuce, tomato salsa, corn salsa, and guacamole. The total calorie count for this meal is 465-and I often can’t finish the entire dish because it’s so filling! I skip the beans, rice, sour cream, and cheese, which would add a whopping 510 calories for a grand total of 975!”
Are you computing the calories of exactly what’s in the bowl? Even so, it can be hard to judge restaurant food’s caloric content. You never know if the guy who made the steak that day dumped a shit load of extra oil on it, etc. Chipotle has also been called out before for providing misleading information about calories. Anyway, like others have said, perhaps your wife’s, or even your own, calorie-counting is off, which I could be 100% wrong about, but if not, perhaps she is under-reporting her intake.
My other thought on the subject, and this is only one person’s opinion that you are free to disregard:
I work in the climbing industry. In addition to more administrative duties, I coach climbing. I work with climbers on movement technique, physical training, injury prevention, and mental training (super important and under-rated in our sport). I’ve done it long enough that it’s easy for me to watch someone climb, train, etc. and see what they’re missing and how they can improve.
My girlfriend is also an avid climber. We both love it, and it’s amazing to be able to share our biggest passion together. I’m a couple steps ahead of her in terms of climbing ability, and I can spot things she could do that would help her improve, which she is definitely interested in doing. Most recently, she’s been having problems with her mental game. If you’re scared to fall (or scared to fail) while climbing you don’t climb well. She’s frequently backing off climbs she’s more than capable of completing, and has been avoiding leading hard routes (leading=big fall potential).
It’s taken a lot of trial and error, but I’ve found that I’m most successful in helping her when I can just be a pillar of support and stay out of the nitty-gritty a bit more. Sometimes she wants specific help and will come to me, and sometimes I’m able to pepper in some tips here and there, but every time I turn into a coach, which is really easy for me to do, I’m not as successful. Your mileage may vary, but I’ve seen this trend hold true for a lot of couples who climb.
It seems like you and your fiancee are focused on living a healthy lifestyle, which is awesome, and is something you can enjoy sharing. It’s possible that she’d do well with a bit more of finding her own way. If you’re super-involved, maybe she feels guilty about admitting to you what she’s actually eating, and is under-reporting. Sometimes it’s hard to feel vulnerable and/or admit weakness to a partner. As someone else said, maybe it’s time to outsource it to someone else.
Your mileage may vary.