It was my bosses birthday today. I feel I have always tried hard to foster a friendly relationship and it hasn't always been forthcoming but over the past year I feel things have really improved between us and would say things are 'warm' as opposed to 'cool'. However I bought her a card and a small gift that I put in the card (just a bracelet) from the high street and put it in her tray at work. I saw her later and knew she had got the card as i put some admin in her tray later. Anyway, aibu to expect a thank you? She said nothing and while the gift was only a small one, is it not courteous to just say thanks? I don't feel like i'm being unreasonable but at the same time I don't want to sound petty and say 'did you get my card and gift?'