11 years old. Period. Tampons!!??

Ayomide
So my younger sister is 11 years old and has just started her period. I was in total shock, I knew it was coming but didn't realise it was going to be so soon. 
Anyway. She started at school during the day on Friday and only told my Friday night just as I was going to bed. I panicked because I don't really use pads so didn't have any and it was really late so shops were closed. I finally found one but my friend said to have given her a tampon. 
Im not really keen on introducing her to using tampons I don't know why though, would anybody else give an 11 year old tampons to use or just pads? 
Let me hear your opinions. Comment 👇🏾👇🏾👇🏾