Maria's poem is a short, tender message from someone who has found a strange kind of home. The speaker has never been to the moon, yet says it is where they belong. Just looking at it brings a feeling of safety. That's an odd and touching idea: home here isn't a place you've lived in, but a place that makes you feel calm from far away.
The poem then turns toward another person. "When you think of me," the speaker says, "look at the moon." Because the speaker feels at home there, the moon becomes a meeting point. Two people who may be apart can look at the same sky and feel connected.
The mood is quiet, gentle, and a little wistful. The ellipsis after "safe" works like a small pause, as if the speaker is taking a breath before offering the comfort. There's some sadness in the distance the poem suggests, but the main feeling is reassurance: even apart, we're not completely alone.