It's almost that time again

Ahh, ShutoCon, my third least favorite con. Sydney ignores me, treats me like shit, ditches me, and oh yeah, she'll probably claim the credit for all the work I did to make her cosplays look good.
I spend all this money to be miserable for a weekend and never get any money in return.
I mean, she's making bank this weekend, and you know what I'm doing? I'm worrying about saving enough money for gas to pick her up from class next week because of course she never gives me gas money. I'm so sick of her, especially now that she's extra whiney because she's getting sick. I swear, its like if I didn't spoon feed her everything or baby her or coddle her she'd probably cease to function. Yet no one even realizes how pathetic and unreliable she is because she's always using someone. I'd love to let her flounder and fall but at the same time I don't want to see all the pity she'll get for being so 'alienated and alone' and who else will throw away their lives just to make her happy.
She's useless. She's never on time, not reliable, responsible, financially stable or competent, and she's as unintelligent as a middle schooler who doesn't realize the importance of education or self awareness. She's vain, whiney and overall  a user. I don't hate her, but at the same time I wish she wasn't so toxic.