I, a gentile, received a mezuzah as a gift from a Jewish family friend. Is it appropriation for us to put it up in our doorway?

I graduated college recently, and a Jewish friend of my family (we are technically Catholic but non-practicing, and I myself am agnostic) sent us a mezuzah as a graduation gift for me/as a token of her very long-standing friendship with my parents. I’ve been looking into multiple sources and there seems to not really be a consensus on the matter from what I’ve seen. Upon looking into the topic of mezuzahs, their meaning and their history, I find the gift very touching and there was clearly a lot of thought and good will put into it by her.

However, upon looking into it and knowing that it stands for a Jewish household, and that the assumption upon seeing a mezuzah in a doorway is that the family living there is Jewish, I’m a bit torn about if we should put it up. The last thing I want to do is appropriate Jewish culture and traditions, and I want to know what you guys think we should do with it.

Edit: I forgot to mention earlier that the gift we received is a mezuzah case without a scroll, if that bears any weight.