I hate the term 'Mixed Messages'. More often than not there's nothing 'Mixed' being communicated and rather it's a failure to read what a woman is communicating. The average guy tends to 'get' exactly what a woman has implied with her words, but it takes practice to read her behavior and then apply it to his own. When a girl goes from hot to cold and back again, THIS IS the message - she's got buyers regret, you're not her first priority, she's deliberating between you and what she perceives is a better prospect, you were better looking when she was drunk, etc. - the message isn't the 'what ifs', the message IS her own hesitation and how her behavior manifests it.
Women with high IL wont confuse you. When a woman wants to fukk she'll find a way to fukk. If she's fluctuating between being into you and then not, put her away for a while and spin other plates. If she sorts it out for herself and pursues you, then you are still playing in your frame and you maintain the value of your attention to her. It's when you patiently while away your time wondering what the magic formula is that'll bring her around that you lean over into her frame.
What most guys think are 'mixed messages' or confusing behavior coming from a woman is simply due to their inability (for whatever reason) to make an accurate interpretation of why she's behaving in such a manner. Usually this boils down to a guy getting so wrapped up in a girl (i.e. ONEitis) that he'd rather make concessions for this behavior than see it for what it really is. In other words, it's far easier to call it 'mixed messages' or fall back on the old chestnut of how fickle women are, when in fact it's simply a rationale to keep themselves on the hook, so to speak, because they lack any real, viable, options with other women in their lives. A woman that has a high IL in a guy has no need (and less motivation) to engage in behaviors that would compromise her status with him. Women of all ILs will sh!t test, and men will pass or fail accordingly, but a test is more easily recognizable.