Integration

[Nachtsider]

The only way to salvage the situation is to explain Cheetara's change of heart as stemming from manipulation by Mumm-Ra. Mumm-Ra kidnapping the real Cheetara and impersonating her would be the ultimate mindfuck and utterly awesome, but if they have to settle for something tamer, perhaps he could have planted false memories in her head or replaced her with an evil clone of his creation.