2 month old suddenly refuses her bottle

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Hi, our daughter has taken a bottle easily since she was a few weeks old but since last weekend has refused to take it. We have an Army ball to attend next weekend but if she won't take a bottle I can't go (which won't reflect well on my partner with work).
We have tried moving to the 3 month+ teat but that didn't help at all. He's tried feeding her in a different room away from me but no luck either. I've tried feeding her with the bottle too but she just wants breast. 
Anyone have any tips?