Well if you said she looks like she is glowing I would take it she hasn't ovy'd yet. She does look pretty thick tho, is she currently still locking with the male? Is she still hanging on the cool side of the tub?
Usually after they ovy they loose their glow and stick to the warmer side of the tub and start to go into prelay shed a week or two later.
She may be getting close to ovy, but if her behavior is still indicative of building then she hasn't ovy'd yet. Once they ovy their behavior does a 180.
And when people use the term 'tail suck' its more than just their literal 'tail' part it's more like the last 1/8th of their body, seems to 'shrivel' or 'pull inward' from some kind of inner suction.