Doll is her best friend forever.

Meaning: This sentence highlights the special bond and enduring friendship between the girl and her doll.

Choice of Words: Doll is a small toy figure representing a human being. Is indicates the existence or occurrence of something. Her refers to the girl who owns the doll. Best means most excellent or desirable. Friend is a person with whom one has a bond of mutual affection and trust. Forever means for all time or without end.