Just give her lots of attention, poor bun :? Keep her warm, make sure she is eating and pooing properly. Anything amiss and take her to the vet.
Thanks for your replies.
She had seen the body before we found him. I am not sure will want another partner, it took her ages to bond with Dopey and she absolutely hates Jade (although she is another girl, so that may be the reason).
She is inside now, I am taking her to the vet later today anyway to get her myxi booster. I am going to ask about her weight too because she was already quite thin and can't afford to lose any more whilst grieving, I don't think.