The Servitor's vox box would automatically crackle into life, using its same, monotone voice to answer the Krieger's comment.

"Clarification: I was suggesting that the analogy used by my mistress may,-"

"Mute!"

Suddenly sounded Adrianne's voice as the Psyker had leaned over to stretch out one arm to press a hidden button on the servitor's back, as its vox box suddenly grew silent. It moved about, shuffling slightly, but not a single sound came from it aside from the occasional whirring sound of gizmos and hydraulics from its body.

Leaning back into her chair, now with a much more satisfied look on her face, Adrianne would turn to look back over at Vala with a smile.

"Heavy hitting? Shotguns? Sweetie, you do realize what a bolter is?!" Adrianne quipped with a mischievous smile!
"It is essentially a direct grenade launcher. And a stormbolter is just two bolters latched together. If you like heavy hitting options, you'd fall in love with it if you tried!"

The Psyker commented with a sly grin.

"And don't you worry about food. House raids are actually quite lucrative on a rich world. Even the heretics around here are bound to be well off! Imagine the foodstuffs we'll be able to find in their larder!" Adrianne said with a glint in her eye! For it had been a thought that had just struck her too!

It had taken a while for her to realize that the average citizen on this planet was actually quite well off compared to other areas of the Imperium. Which meant that when they invariable kicked in the door and the Sister of Battle did her thing and burnt the owner on charges of heresy, that meant they retained the right to confiscate all their stuff! Foodstuff included!
While Adrianne did not consider herself a burglar, it was technically alright in her mind if she confiscated the stuff under imperial or inquisitorial decree! It would technically not be stealing then! 

... in theory.