I don't know what you want from us, OP, I really don't.
The people on this thread who have something in common with you - in that they have made themselves vomit on numerous occasions - are people who have or have had eating disorders. ALL of us were 'in control' at some point. All of us felt that we had discovered marvellous new ways of controlling our weight. All of us felt that the outside world had no idea and that we knew best. Yet, strangely, most of us kept it secret. Most of us suffered electrolyte imbalances, swollen glands, burst blood vessels all over our faces, scabby knuckles, rough skin, eroded enamel. We put our hearts and other vital organs under terrible strain. Some of us got so ill we spent time in hospital, getting to know other patients who didn't make it out alive.
I've had anorexia (mostly) and bulimia, and have to tell you that though other people got most worried about the anorexia, the bulimia was far tougher on my body and mind.
So: that's our experience, but you want us to applaud you and tell you how clever you are. Well, maybe you are; maybe you've found a way of having risk-free bulimia. But perhaps, rather than berating us for not being sensitive enough to you, you could be sensitive enough to us to understand why we find it hard to cheer you on in the way you seem to want?
Btw, I'd be staggered if your dd doesn't know you're bulimic. But good luck to you, and to her.