Tina competed in the over 45 division Masters National Championships Jul. 16, 2015 - Jul. 18, 2015
In FBB terms, I don't call that "hiding". Few other opportunities to compete exist these days, unless she down sizes to Physique. We may never see her in competition again, but I have not seen anything published to suggest that, yet, have you?
She is now a veteran, so accept the fact that appearances will be less and not everyone wants to publish selfies all over the web every 5 minutes.
The fact that Tina has competed as recently as 2015, and in the over 45's at that, makes her a star. She got 5th in a major show. Fantastic!
But just because she doesn't want to rush out afterwards and make loads of clips and shoots does not make her a lesser star than she already is. She has little more to prove.