birthday gift(need advice within 6 hours)

ok well this is kindof a touchy subject because me and her and good friends but we both like another and i think she likes a relationship sometimes and her friend says she did want one 1 month ago but then she likes another guy now too.
so she likes two guys but she spends alot more time with me and i think she cares more about me as a friend and maybe more.
i wasnt really sure what to get her me and her friend went to a store and we saw a 10 dollar necklace we thought she would like so im thinking that and a card
would a 10 buck gift and a friendship card be a good idea?

Uh... how old are you?