Oh
my
god.
Seriously..stop planning everything and overthinking things. She blew you off..meaning she's not looking for a relationship with someone as clingy, borderline obsessive as you.
When she says 'not looking for a relationship'..she means leave her the hell alone.
Forget about her, dont contact her, ever. If she inititiates contact in the future(trust me, she wont) then go with the flow(maybe you had better come ask for advice on here before replying).
Life is not measured by the number of breaths we take, but by the moments that take our breath away.