Note that Ladydroid uses rounded speech bubbles like the human characters. This stands in contrast to all the previous robot characters who have rectangular speech 'bubbles' (basically a visual shorthand for "this speech sounds robotic").
This implies Ladydroid speaks in a completely human tone that is indistinguishable from any other human. there is a reason for this, which will be revealed in later chapters, but right now "she's filthy rich" will suffice.
Meanwhile the other droid characters have subtle imperfect tells, by implication. To convey this, The translation notes for the other droids are formatted slightly differently compared to the human characters (different way of quoting and emphasizing words, mostly), but Ladydroid uses 'normal' formatting like any other human character.