Don’t say: “She said me that she was happy.”
Say: “She told me that she was happy.”
Or: “She said that she was happy.”
Tell means “to give information to a person” – so tell (present) and told (past) are always followed by a person: me, you, him, her, us, them, John, Jane, the teacher, etc.
With say (present) or said (past), we can use these structures:
1. say (something)
Frances says she doesn’t like chocolate.
2. say that (something)
I said that the new website design was great.
3. say (something) to (a person)
What did the teacher say to you when you failed the test?
4. “(something)” a person said
“Nice to meet you,” Harry said.
Just remember – you say something, and you tell someone something!