Board Thread:Speculation House/@comment-112.198.77.191-20130912171139/@comment-7472785-20130921125218

Another aspect - the glyph fixing the opponent in place, the giant armor as well as the Nevermore, were both cast at her location, whereas the Glyph allowing Ruby to run up the cliff, which were cast from distance, may be different inasmuch they didn't fix in place but rather gave adhesion.

Distance casting may also take considerably more effort, as most of her glyph casting - air steps and shields - are short distance, and as her distance 'shots' seem to tire her less.

Note also that other than her exhaustion after the string of glyphs on the cliff, she shows signs of fatigue after purely physical efforts (like running from the fire and when leaping for her sword).