So if I think one of these two things is going on. Either Milena is still actively shooting or the photoshoot with Arena was done in 2016 but Arena made her social media post just a few days before the release. I'm actually leaning towards thinking the photoshoot was done recently because I think it's unlikely Arena would post essentially a behind the scenes pic five or six months after the work was completed.
Well, judging from this bit from her interview you might be right.
" 2Busty: What is the reason for Your retirement?
Milena : People steal too much. [...] from the financial point of view it made no sense to continue.
Daktari just had an idea to make an emergency call to make the site continue. I am not sure if this will help. But believe me, I would like to continue with the whole program, photos and videos. Do you see a chance? "
Although she also says many times that
she already has a new job. Maybe it's full time modelling with the new job on the side or maybe it's the new job full-time with modelling on the side.
But oh well, we might never know.
P.S.: Is Milena the woman behind Arena? I can't really make her out.