How would you diagram this sentence?

Question

Her friend gave her a present at the party

Answer 1

Friend is the subject. Present is the direct object. Gave is the verb.
I believe "her" is the indirect object with a silent but understood "to" : gave to her
"at the party" is a prepositional phrase.
so the meat of the sentence is: friend gave present
I don't know if this helps, hope so!