Yes, the first moment that was my thought too. But then I thought, ok, why would CW assume that Bubbles comes in, fuming in rage, presses her against the wall, just to tell her that the memories are gone, and then quietly walk out? She'd either just never come back, or come back for revenge.
I know a lot of people are "I hope bubbles rips CW to pieces" and such. But remember, AIs are people in the QC universe with their own rights. Yes even ******* AIs like CW have rights. If Bubbles kills her now, it's murder. Plain and simple.