It sounds like you're pretty good at this DB thing.
You're wise to go a little dark now. She needs to see what it's like to be on her own. Her "I can do better" fantasy may be short-lived when she actually tries it. It's often not what one thinks it's going to be like. Where are your kids? It's hard to go dark with kids. I tried, but every night, D4 has to call daddy to say "good-night". It was something she's always done (he works nights), so I couldn't just stop that.
It's a good idea to not answer all of her calls. She needs to know that you have a life, and are OK without her.
Me 36 Husband 35 D5 S2 separated: 10/29/07-present Served divorce papers 1/22/09 "When the world gives out beneath your feet, it is time to learn how to fly."