[keen1981]

She just forgot. Talk to your sister about it.

My sister and I are tight. Ancho early we forget stuff :/ now that she will be having her own LO, she has forgotten a lot about my boys? Whereas before- she went over the top for them. So I rub it I slightly. LOL. We are sisters after all

In seriousness- its life. Unless you have a party or are über close (and likely bringing it up to sis, regularly) she will forget.