Originally Posted by CreepingButtercup
What makes you think she is not just mono, that she KNOWS what she wants? What makes you realize she might be open to the idea, rather then being unable to detach herself from someone she cares for so cleanly?
Hate to say it OP, but CB here has hit the nail right on the head.
She has told you unambiguously that she is monogamous and that polyamory is a deal breaker. This is a boundary she has clearly defined and explicitly informed you of.
Stop trying to trick her into believing something that you believe. If you actually do care about her and not just about how you imagine she could be as a poly, then respect her clearly defined boundaries and stop playing games with her. She's monogamous, dude, deal with it.