I have a 16 month tb/paint filly, at the moment she is 13.3hh. Dad was a paint 14.3hh mum TB 16hh, mum died when she was 3 1/2month old.How do i know what height she will end up. Ive done all the measurements eg: length of elbow to fetlock, the measurement from the middle of knee to coronet band? Which is right or is it all a guessing game . I have also read that feeding up your young horse can help too.HELP!!