Why am I never in pix with her on facebook?

[Merry]

She acts like my friend. She invites me over and is so happy when I call her or show up at her house, she buys me gifts, brags about me to her other friends.
BUT I'm at all her parties and family gatherings and I notice even tho they take pics wtih me in them I'm never tagged in them or show up on facebook. Everyone else she takes pics with at the same party is tagged or on her page...so why am I alwasy left out? There is not one pic of her and I together. I'm to ashamed to aske her why and look stupid so just tell me what you THINK.
because I want to know why SHE does it for every one EXCEPT me. That's the point