I'm not even sure how many people I'm speaking to here. Just so I know what flavours we are working with, could we each chime in with what our backgrounds are roughly? I know it's hard to quantify for most magickians and even harder to express without leaving a resume so specific it may as well be a fingerprint... but some of the stuff I'm reading is pretty alien in a "I don't think I could make it work like that" way, and I don't want to assume everyone is either a Peter Carroll adherent or trolling. (No, I'm not equating those two.)
I have a Caliphate-Crowley background with all the grab-bag and grab-assishness that entails, plus a bit of Astaru and Crowley-by-way-of-Gardner-by-way-of-third party.
I've seen suspension done and understand one or two theories of how it can be applied magickally, but am not the one who mentioned it earlier in the thread.
What I understand of succubi suggests that summoning one and calling it Cracky might be fun in a self-destructive and self-delusional sense, but not particularly helpful for anything but getting your rocks off and getting the carnal urge out of your system... Of course that assumes that an unsatiated carnal urge is destructive to rather than productive for your working. I do not in the vast majority of cases... But that is a byproduct of my background more than objective reality.
I would ask whoever was suggesting suicidal invokation, assuming they aren't simply trolling, something I hesitate to do under anything but the most critical of circumstances... And usually only then if I'm in a highly personal relationship with them: Could you frame your intent for me? The best way I can explain that is, in words, explain what you hinted to accomplish and how it forwards your own ambition. Even if it somehow got a result other than your own death and an extremely awkward cleanup for the authorities (not to mention whoever found you), what would the desired result be and how would you profit?
I'm curious about what sigils were being discussed as well. We know her full name, many details about her that are magickally significant, and of course have seen quite a bit of her art... So generating one isn't difficult. It sounded like someone had something pre-existing and less artificial though.