My vacuum cleaner's gone.

This past Sunday at church, we started a series called Twisted. The topic was about Twisted Truth, and how the world will lie to us about who we are. The reason I bring this up is that I recently encountered a situation in my building that made me realize just how much I do hate it when people lie to me.
Basically what happened is that I moved some furniture into my new apartment on August 31, and then went back to Toronto for a week. When I came back to move in for good, I found that a vacuum cleaner I'd left in a hall closet was missing. I told the landlady and the former superintendent, and both claimed to not have seen it. However, as I did more nagging about the situation, the superintendent said she saw the landlady using it in one of the apartments; the landlady insisted that she superintendent must have taken it. They have their own little feud, so there's a lot of he-said-she-said stuff going on. But where we end up is that I have lost a vacuum cleaner.
I can't figure out in this situation whether I am more upset about the loss of my actual property, or that someone is clearly lying to me about what happened. Of course I am mad that I lost something that was in my apartment, but it is plausible that a miscommunication occurred in which my vacuum cleaner was assumed to be the property of previous tenants, and got thrown out. I would totally buy that story. In this situation, though, nobody will own up what happened. Personally, I am siding with the superintendents; they tried really hard to help me, and said they saw her using it, and even called her on my behalf. My landlady gets her story mixed up all the time though - first she said she never even knew anything about it, and then that she had seen it, but doesn't know what happened to it. Her latest update is that she had been looking for it all day yesterday and still couldn't find it, so she will pay me some money for it, and she is sorry and very upset about it.
I have a hard time believing anything she says. First of all, how can she have spent all day looking for it? Students who have class wouldn't even be home during the day.
So, now for the moral, because I suppose every trying situation ought to have one. This whole ordeal has been on my mind basically for the whole week. I've been calling the landlady, talking to the superintendents, wanting to knock on random units to ask about it... But I realized how easy it is to let these situations consume you. I found myself coming up with possible scenarios of how and when she may have moved my vacuum cleaner... or if she was or is just hiding it somewhere so she can keep it for herself...
I noticed that I was starting to drive myself crazy. What it boils down to is that... my vacuum cleaner is gone. I have to grieve it, accept it, and handle the consequences with my landlady (like receiving another vacuum to use and/or receiving payment for the lost one). But the vacuum cleaner is just an object, something replaceable by money. I have to remember that my landlady is a person, someone inherently valuable and created by the same Maker. It's hard to not be fixated on money when student lifestyle has trained me to pinch every penny, but people should always come before money. Loving them, treating them with dignity, empowering them.
Hopefully I can put this situation behind me soon and improve my relationship with the landlady.