I'm so excited to hear about all the communication that is happening with your W. Even if some of it is REALLY confusing, she is TALKING to you. that is GREAT.
I think you getting up earlier for your own reasons is a GREAT idea. I get the feeling that you and W avoid each other a lot and I wonder if the different bedtimes/wakeup times is another part of avoiding each other. If you are awake more of the same hours then it's possible you could spend more of those hours together....
I REALLY think you should get a NEW MATTRESS. I'm with the others, you've been talking about it for over a year!! Or do SOMETHING... even if you can't yet get exactly what you want, could you get a memory foam mattress topper to make it better? Or get a new IKEA mattress (and then later use it as a guest mattress)? Prices on everything are dropping too, so it should be a good time to buy one.
I don't know if this has already come up on your thread, so please forgive me if I am bringing up something I missed. But there seems to be a lot of resentment between you and your W. Not just from her to you, but also, from you towards her. Am I reading this right? She seems content to be dissatisfied. Why?