If you are having serious relationship/communication problems, mixing them up with BDSM (or sex in general) is a very bad idea. Honestly, it will only cause more trust problems for her if you force her to talk about issues that she isn't ready to talk about (without considering her emotional needs or hesitations), or if she is being punished for something that is pretty vague to begin with. I'm also concerned about your statement "If she doesn't give me the answer I'll add something and continue this process until I get the answers I desire." You desire? Wouldn't you rather have her tell you the truth, rather than what you want to hear?

If she clams up whenver you try to talk about anything serious, then you have a red flag on your hands that you need to discuss as equals. She needs to have time to really consider her answers and why she feels the way she does, as well as your patience, support, and love. You won't get an honest conversation with her if she's tied, whipped, and fucked into cooperation. If you continue with the BDSM play, do so because you both enjoy it, not because you want to force answers out of her.
-Phantome