I always liked slim line pads, and used regular size because the larger ones would hang out the sides of my undies. A good overnight one is essential too. I would also buy her a box of super slim cotton tampons for when she's ready. My little sister went straight to tampons at 13, but it took me a long time to get the hang of them (I used to put vasoline on the tip to help it go in).

I think a gift would also be lovely. I plan to have my sisters and special friends donate a bead so she has a special necklace made up from the love of the women around her. A first period is so special and not enough is made of it imo.

Congratulations to your dd!!