Hi Blackie
Here's a good saying I heard today to cheer you up;

The noblest dog is the hotdog: it feeds the hand that bites it.

Listen don't let yourself get down. Positive thinking remember!

Also don't over analyse your W behaviour. There is a thin line you walk here. You mustn't be an insensitive bastard, but at the same time you should never make assumptions about what your W is thinking or feeling (crappy but true saying: when you assume you make an ass out of u and me). We are none of us mind readers. Some people are better at "reading" other people than others it is true, but don't forget a little knowledge (of psychology) is a dangerous thing. Take any advice you may get here with a grain of salt too. There are a lot of people with great insight on here, but at the same time they are working with incomplete data. We don't know your W and we don't fully understand your sitch.

Having said all that it sounds to me as if your W is responding well to you when you reach out to her for example by staying up to wait for her to get in. She is probably leary of getting too close too soon. Why not try and organise a fun evening out together. Nothing too intense and keep it light hearted and friendly. Remember the song and don't go and spoil it all by saying something stupid like I love you. If you think she would go along with this it would be good, as you say it will help if you can spend some time together doing something nice.