YES! You ARE being too nice! I have had similar 'issues' in my 19 years of married bliss and you MUST FORCE her to make up YOUR mind for once and for all where YOUR 'area' of the property is so you can 'stay out of the way' with YOUR thing and let everybody else do THIER thing! I SHE willing to uproot her 'craftroom' or garden area or whatever she is into? Why always YOU having to make the big changes to accomidate everybody else? I been up and down THAT road! Ya gotta have your OWN corner somewhere!
FAIR is FAIR for YOU TOO!
That is the best answer and post that I have ever read on the subject of model railroading.
Kudos to you New Guy!