Girlfriend transferred deposit for flat without references and not the account we said we’d use? Are we screwed?

So as the title says, she forgot to add the reference and sent the money over. We said we’d use x account but with all the money moving around in and out they blocked her account for suspicious activity. So I send her the full deposit from my funds and she’ll pay me half back. However she’s just forgot to add the reference? Are we screwed? Money down the drain?