I see one issue here, as the main reason for this, and many previous losses.
Miki starts off blistering, like today, firing from all cylinders and just plays some tennis that is not from this world. And holds it for a set, maybe a game or two longer than that. But then, due to the fact that she is not 21 but 31 years old, her energy levels, and her accuracy and mental focus along with it, start deteriorating rapidly. It's something quite normal for a player of her style and her age. Her game requires razor sharp focus and an instinctive shot making at full power - something that's not easy to do even for young, in-form girls. Some of you have said that CSN raised her level as the match went on, and to a certain degree that's true, but I think it's even more a perception put on by other factors. In my opinion, due to the nature of her game, Mirjana's level drops considerably more as the match goes on, than what the other player's level raises. As I see it, CSN's level in set 3 wasn't that much better than at the start of the match, but the main difference was that in set 1 Mirjana played with such ferocity, accuracy and determination, that all CSN could do was stand and watch, as she wasn't even able to come to 3 feet of most of Miki's shots. But Miki is like that - she starts off at 100%, goes down to 60 by the end of the first set, and ends the match at around 40. Players like Suarez Navarro have the ability to sustain a reasonably high level throughout the match. Mirjana is no Serena or Sharapova, who can play on an insanely high level all match (we saw what Serena can do in the semis of the French - something Miki is trying but ends up empty handed) and that's why she has to have a plan B. Something that would help her hold it together when things are not going perfectly, when her shots aren't going 200 mph (in a matter of speaking). In the last two sets it was obvious that Mirjana's shots are considerably slower than at the start of the match, when she was fresh as a daisy, and that they're in fact not faster at all than the ones fired by Suarez Navarro. And once that happened, it was painfully clear who is the one that'll be able to hold her level for longer.
It's sad, but it's reality. With the level of play from the first set Miki is a contender for multiple slams. But without a plan B, she is still to reach top 70 even six years after the comeback. Don't think much can be done about it this late in her career, which is depressing. Even more depressing is to see what sort of a chance she could've had this year considering the draw. I guess it just wasn't meant to be.
Good luck in the next one Miki