I think this comes down to a matter of self respect and respect for your partner. Based on the information I've read in this thread, I already consider the behavior to be cheating. More importantly, it's completely disrespectful to me and I can't have a woman around that doesn't respect me.
I hate to say it but you chose extremely poorly when selecting a potential life partner. She has gems in her teeth, posting scantily clad photos online, shaking her ass tk the whole world? Yea that doesn't sound like wife material at all. That's a pump and dump. Im speaking from experience. A woman has in today's environment has access to every part of society and can choose how she presents herself to the world. She chose under no pressure from anyone to present herself to the world in that way. That is already a giant red flag. Think about the type of person that would do that? What thought process they go through to arrive at the conclusion that presenting themselves in that manner would be good?
She may be very attractive but, attractiveness fades very fast with age. For your peace of mind, I'd strongly suggest planning your exit strategy. When a woman behaves like this, it reflects very poorly on you. In this case, I'd suggest doing what women do and emotionally break up internally with her before you actually do so. Just get started on your grieving process now, so that when you're ready to physically exit, you can move on. You've already spoken to her and she's dismissed and downplayed your concerns. Bringing it up further will only make the situation at home worse.
Finally, in the future, choose better women. You're 34 and interested in getting married. The girl you described is not even wife material and you should know that...