Wow! One word, “Ungrateful.” But not all girls are like that though. I don’t know what he promised her initially (I wasn’t there, neither were you). Maybe he actually promised her a Benz, so she had higher expectations which was let down (you know how some girls gist with their friends when it comes to Bae buying something).
Never the less, the best way to have reacted was to appreciate the gift with all excitement, and then when the guests leave, she could bring that up in private. She should also understand that times are hard for some people…that Toyota Corolla now is what some people are praying for. That brings me back to appreciation and gratitude. Guys, share your comments on this below.