Brief Summarize of "My Grandmother in the Stars"

This poem is basically about missing grandmother. Narrator and grandmother are apart probably far away from each other that they couldn't even think about meeting again on this planet and narrator is sad about it. Narrator thinks about the things like the horse and the cow that represent her hometown or the place where grandmother lives in. She misses her hometown so much. She admits that grandmother and she are apart according to the last stanza "Where we live in the world
is never one place." and "You and I on a roof at sunset, our two languages adrift" ,but she believes that they are living in their hearts, and the moon is always lighting them.