Tips for traveling to samoa 🇼🇸

I'm going to visit Samoa for the first time. My grandmother lives there. We would be staying with her at her home.

Do I NEED to bring her a gift? I was thinking a pounamu necklace or something 🤔 Should I give money aswell?

like I said, it'll be my first time over there and I'm not close with the samoan side so I don't know too much about it all.