My 10 month old is 23lbs and 30ish inches long(haven’t measured since his last growth spurt) As long as she is steadily gaining and not losing, I wouldn’t worry. You can always call her doctor if you’re concerned.

You can use the WHO growth chart calculator online to see their percentile for height and weight. My son was 20 lbs at 12 months and his doctor said he was growing just fine and was following his growth curve.