Q; How come Lwaxana can talk when she's partially dematerialised by the transporter?
A; I don't think she does, I think instead she sends a telepathic message and the human brain imagines that it sees her lips move in sinc. This might be related to the reason why the Universal Translator, as well as making everyone seem as though they are speaking English, makes them seem as though they are actually speaking it physically in that their lips move in sinc with their words.
Much confusion in this show between empaths and telepaths. Both Troi and Lwaxana occasionally display the attributes of both. Ah well, it's a grey area, I suppose, although I do wish the writers would come to a decision on this and stick to it.
The Child Where Silence Has Lease Elementary, My Dear Data The Outrageous Okona
Loud As a Whisper The Schizoid Man Unnatural Selection A Matter of Honour
The Measure of a Man The Dauphin Contagion The Royale Times Squared The
Icarus Factor Pen Pals Q Who Samaritan Snare Up The Long
Ladder Manhunt The Emissary
Peak Performance Shades of Grey