Babs tried to reach out and explain, but Cass was furious. She pointed at the other woman's costume. "You! Batgirl!" She was having an even harder time with words than usual, so her lecture consisted mostly of angry flailing gestures. "Throw me away!"
Cassandra had worked long and hard to prove she was worthy of Barbara's respect, worthy of being the next Batgirl. She'd thought the two of them had an understanding. She'd thought she wouldn't be so easily replaced. Apparently she was. But not just replaced -- she'd been temporary all along.