Trying not to be too outing, but I work with someone who used to be (that is a whole other story, don't want to drip feed but basically she doesn't like my DP because I left someone her DP is friends with to be with him) a really close friend of mine. We drifted apart but obviously continued to stay nice and friendly with each other as we work in the same office.
DP asked me to marry him last night, so I'm over the moon and shared it on FB and was talking about it in the office this morning.
She's come in, sat at her desk and not said a word to me 
I'm not one of these people who would go on and on about it, I mentioned it at work as I was excited, a few people said their congrats and that was that, except she has said nothing to me and is being really quiet and short.
I feel a bit hurt, even a little acknowledgement of it would have been nice but nope, nada. AIBU to be a bit hurt by it or should I just not bother? I'm actually more confused than anything I think...