Does this boarder feel like your farm is her home-away-from-home? has she kept her horses there longer than youāve lived there (did you inherit her when you bought the farm?) I ask because while I certainly agree that the dirt bike and Christmas stuff are way out of line, some people think storage is storage and a big barn just sitting there empty is just begging to be filled with their stuff! And horse people accumulate a LOT of stuff. There are people in this world who see your empty space as something they could use ājust for a while.ā When you ask them to move their stuff, theyāll take it someone elseās empty space!
All joking aside, there are also people who live in apartments who formerly lived in houses and had places for their lifelong accumulation of horse stuff (extra blankets, the expensive saddle that fit the horse they just sold, etc). People who need to keep all their horse stuff at the barn have very different space needs from the person whose basement is full and whose retired horse has a grooming tote and a first aid kit at the barn. Sounds like itās time to have a conversation with your boarder.
You mention a trailer - is hers full, or empty? Suggest she offload the miscellaneous stuff into her trailer.