From what I have read so far there doesn't appear to be any evidence whatsoever that the server was hosted in her actual home. And that certainly would be a strange, strange thing to do. All it would take is an ice storm in Westchester to put her ability to read and send emails out of commission.

Ockham's razor tells me it's more likely the media is speculating based on a whois record or similar. Scanning the existing comments I don't see anything more definitive than that. Is there any actual reason to think the email server was physically in suburban NY?