She purdy and she can fight. Her ground game seems pretty suspect though and I doubt her TDD against big chicks like Gadelha, JAG, etc. A lot can change in four years - she could be champ, a UFC washout or just somewhere in the middle.
If I was going to bet on who is going to have the most success, I think the popular pick would be Tatiana; she has the size and base skills to be a problem for everyone. I'll keep rooting for Lachana though. Her two fights so far have been absolute barnburners.