Female Friends and Dieting

What is it about telling a female friend that you are dieting that makes her urge you to stop?
My friend Sheila says maybe we're only trying to help each other increase our self-esteem -- "You look great!" "You don't need to lose weight!" or even "Diets don't work."
We all do it.
I don't enjoy dieting, but a look at the scale reminds me that I weigh about 30 pounds more than I did when we moved to Columbus.

I was even heavier here when we traveled to France in 2015.
I don't want to avoid cameras or dislike my photos in France
because of my weight. 

I weigh almost as much now as I did when I gave birth to my youngest, and he's the one I gained the most weight with.
Yes, I know that muscle weighs more than fat and that I work out constantly so I am probably healthy, but what is wrong with wanting to be at a lower weight?
I'm not trying to lose 30 pounds. People say that would be too skinny, but if you look at me when I was that weight, you wouldn't think I was anorexic.

See? Healthy. Not too skinny. But also young. I'm not trying
to get to that weight. Just less than I am now. 

I look good, healthy -- although at the time, I never realized it.

I just want to lose about 10 pounds.
If I lose 4 pounds from where I am now -- mid diet -- I'll officially not be overweight anymore. That means I'll reach the top end of the BMI which means between 21-25 BMI. Again, I know that muscle might throw off the official BMI reading, but if you looked at the places I carry fat, you really can't argue that I could lose those pounds and it wouldn't hurt. It might make me feel better, run faster, feel sexy about my body.
I promise I'm not in danger of becoming anorexic, and I'm not judging anyone else who is happy with their body. Good for you. I hope to join you on that platform once I reach my goal.