If you bought an North India travel guide by Vanessa Betts and Victoria McCulloch, and tried to figure out where is ‘Phulud’ and how to get there from Deogarh (and how to get to Deogarh itself from Udaipur), don’t waste your time googling, as it’s not Phulud, but Phulad.
It does seem that the narrow gauge journey from Deogarh to Phulad is indeed beautiful:
Meanwhile, I have also found this very interesting post by Mary Anne Erickson: Impressions of India: Udaipur to Deogarh. I’m not yet sure we’re going to follow that route, but it seems promising.
EDIT: The guide actually also says, on page 10: Fly from Jaisalmer back to Delhi to connect with your flight home. Fact checking? No, who needs that? :)