I hear ya! Growing up I was constantly told I was dreaming, imaginging, lying, etc. No one believed all the weird stuff that happened to me. My kids are teens so my daughter telling me I'm nuts is part of our playfulness together. Actually, I hear I'm such a dork or a geek more than I'm nuts.

About what I said about shifting inside you to make room for change...It doesn't have as much to do with believing or having had experiences, as it has to do with shifting your state of consciousness. We tend to constantly ground ourselves, which means to keep our conscious state at a certain foundation or level where we feel most comfortable given our day-to-day existence. This constant shift isn't something we feel or notice, it just happens. I believe that this is why we can one moment see a ghost and think, "Oh my, I'm seeing a ghost!" and then the next moment it's "gone". The ghost might not have literally gone anywhere. You shifted states of consciousness without realizing nor intending to, and to your conscious awareness the ghost is the one who left, when it fact it was you.
Even with strong belief in ghosts and strong desire to want to see them, we cannot help but make these transitions in consciousness. So with the example of the experience with the album moving, you wondered if you were just making coincidences. That kind of thinking denotes that you were unsure whether to fully accept that the album moved on its own or if that wasn't possible. And it denotes that there is such a thing as coincidences.
Throw out your assumption about coincidences and the general definition of what that means, and believe and trust that there are no coincidences, that everything in your conscious awareness happens because it's supposed to be there. If you treat it as a sign from your mother in law, even you aren't certain and can't be certain if it really was, then you're at least taking a step in the right direction of allowing
more experience to happen to you. But if you get yourself stuck in trying to debunk whether it was possible for the album to move, when clearly it sounds like it wasn't possible for it to just happen on its own, then you're giving focus to the wrong thing.
I'm not saying you're reacting wrong, I'm just showing the mistakes I've made and what has held me back for so long. I'm contiually struggling with making progress to push myself out of just having strange experiences that I'm still not sure about, into having more definitive and helpful experiences that will actually propel my spiritual growth. I think we have to work on it all the time. For instance, since my dad's death I've had several visits and signs from him. I truly believe this. But for a while now I haven't been focused on that, and subsequently haven't felt any signs or contact from him. A skeptic would say that that's because we experience what we want to believe. I don't believe that. I just think that it's a two-way street of communication. Also, my dad
could be trying to get my attention but if I'm not thinking about him or paying attention, then I'm missing out on those experiences.
My advice is to send out another invitation for your mother in law to contact you. In fact, ask her if she's the one who moved the album! Then see what kind of experiences happens next that's out of the ordinary. No matter how much experience and belief you already have, it always helps to have more validation.
Vicky