you had Wampa + Palpatine , if you could correctly guess Whispers end location you could have 2 shot Whisper with Wampa at R3 through asteroids.
Wampa AND Omega Leader. You know what Whisper doesn't like? Not being able to modify her defence dice or rely on FCS. Between those two, particularly with Palpatine in support, you should be able to create a huge dead zone that Whisper is ****ing TERRIFIED to enter.