Well, the Vulcan's Noun novels - the ones that Charv appears in, anyway - take place many years after TOS. A lot can change in that time...
Well... I'll grant that Linville isn't as much shorter than Christian as I'd imagined:
She looks about 5'7" there (Shatner's 5'10"), and Christian is 5'9". But the voices are completely different. If anything, Linville reminds me strongly of Captain Janeway.