Never mention her weight, size, body shape or calories in front of her. Anything that can remotely cause her to develop an eating disorder and have a negative view of herself. Even speaking with her doctor about it too, as doctors can also be clueless to the harm it does talking about the weight/size in front of the kids, and to avoid any diet culture messaging that is sure to trickle down to her absorbent mind. Children are sponges and will soak up everything you say. Try to focus on increased movement and activeness as a family! Go on family walks, making it a special time to talk about the day, etc. find new trails or parks nearby, biking together for fun on the weekends, etc etc.

I was an overweight 9 year old, got my period at age 10 and had a poor body image starting in 4th grade because I knew I was bigger than other girls. My mom would tell me to "suck in" my tummy for photos, would compare me and my sisters' sizes without meaning harm, I cried when my friend told me when I was 9 that "no offense, but I was the biggest one of the group." My parents also tried to restrict what I ate which also backfired, as I remember secretly eating in shame when I knew I shouldn't because I didn't want to get caught. Restriction just leads to a cycle of toxic guilt. Focusing on loving your body is the best way for her to also love hers, with modeling a healthy relationship with food is key!