You're being used, Jazzman. Sorry. She's a d*** for not at the very least offering to split the payment. There is no excuse for that. You can talk about her not wanting to be 'cheap' or whatever. No. It's BS. There is no excuse why she can't pay her share, like an adult. Just like the rest of us adults have to. Nobody would excuse this behavior from a man, so why excuse it from a woman?
Also seems like a red flag that she won't ask anything about you.
She also seems flaky. She's still into you though, but she's a d***.
She's using you.
Also, Brazilian music is the best music on the planet.
From one Jazzman to the next: Dump her ass.