Sorry, nothing here is known about the writer beyond the name attached, so what follows comes from the words on the page. The speaker is hiding how bad things are at home. To friends, life is "great" and "filled with love," but privately it is "just hate." The poem suggests a family that has fallen apart: someone ("she") has done something hurtful, and the rest of the family said goodbye too easily. The speaker pushes their own feelings aside to stay strong for a sister and brothers, which hints at a protective, older-sibling role.
The mood is lonely and weary. Short lines and simple rhymes give it a plain, almost confessional tone, like a private diary entry. The repeated "Hating" builds anger, but the last two lines drop that anger and reveal the real wound: a longing for "a decent family." The hurt underneath the hate is what stays with you.