What's the relationship with your scale look like? Does the scale make you happy or angry? .
Frances is in a weight class sport (they have many weight classes, they don't discriminate). That means she weighs in the day of a meet and then lifts 1-2 hours later.
Any huge jumps or drops in weight will potentially mess with the technique and body awareness for the lifts so its not worth it, especially close to a meet day.
She can find happiness from a good day at the gym, hitting a PR, getting more consistent at a movement or just being around like minded people training. If she has a crappy day at the gym? Well she's a great person, mother, friend, artist, and client. So I'm sure she can find other things in her life that make her happy. She gets feed back from what she eats and drinks by how she performs at the gym the upcoming day(s). Sometimes a couple drinks, some junk food and a late night are worth it. Three days before the meet she will probably eat well and get some sleep. .
If you have a weight loss goal that's great, but if every time you step on the scale it ruins your day I suggest you rethink your goals or how you are going about reaching them. Often people have a weight loss goal and when I ask why that number I often hear "I weighed that in high school or college". You probably don't have the same hair-do or clothes as back then and I doubt most would go back and wear them now. Maybe you have a career and or kids now, will you give them back too? You can change your body composition and maybe never have to step on a scale. Maybe you won't fit in those old jeans, or shirts, but maybe you deserve to go shopping and find something that you are comfortable in with those strong quads and shoulders that you have been working on at the gym. It's ok to be strong. In fact, I think it's a good thing.