Yeah I'd go the pearl earrings! O
It's probably the safest option, and still sounds really nice!!
I'd say the bag and perfume are pretty tricky, unless u know the exact one she wants! Just bcos I know I'd be shopping round for ages till I found my perfect one - but that's just cos I'm fussy!!
And the butter mite be seen as thinking of her as more then just a friend!
But that's just IMO! I'm sure she'll love what ever u get her, just cos it's from u!!O
But goodluck!!