My toddler's weight is stagnant at 10kg for the last 12 months, any suggestions that can bring up her weight? She is drinking well (240ml each feed) and eating well during meal times but her weight just doesn't increase.

You can check her weight against the baby book. If it us still within the normal curve and she has not lost weight too dramatically, then she is fine. And as you said that she is eating well and I assume that she is well and active. So I don't think there is any cause for alarm.