that would be absolutly massive if it was SVL that was a bit of a given and didnt need explaining imo. It does look female and you will def be able to tell in a year or so. looks healthy. great dragon.
But- it may be a late developer, only being 8 months old, or may be dulled down due to stress. EWD can get up to a metre in length matt, so 30 cm SVL would be about average.