Removed 'giantess' tag; yeah, sure, technically she's a giantess, but that tag's supposed to be used based on what you can tell from the image, and (unless I missed something?), there's nothing here to hint at her real size.
When Klan Klein is at full Meltrandi size, she has (relatively) normal, adult proportions. When she is miclone size, she has child proportions. Therefore, Kadorhal is right; she is a giantess in this image.