I can't say this is unfamiliar territory for me, my wife is going through depression and possibly bi-polar, I went through that "divorced wives club" nonsense as well.
The one thing is this, they are depressed but well enough to possibly pursue a new life, improve their image enough in hopes of finding someone new. The depression thing becomes an excuse for that behavior - plus when they go out with their "club" to whoever knows where, they seem to be in good spirits which suggests the ability to switch off the depressed feelings when it's convenient.
Plus lately, all you have to do is tell the doctor you're sad, have trouble sleeping, have a $hitty marriage or hard work life and a doctor will write you a prescription for anti-depressants, you almost wonder if they're getting commission off every sale, these meds are so wide-spread, it's the new legal drug of choice for many people looking for a slight escape from reality.
180's are what you need to do, whether or not you will do them is entirely up to you.
Do the opposite of what you've been doing.
If you've been overly nice, comforting, pampering, etc. Be apathetic - don't show any emotion.
If you've been overly communicative, limit communication to responses only and make them brief.
If you are pursuing her, pull back, stop pursuing, allow a space between the two of you and maintain the space until she starts to fill the void by getting closer to you.
