Missing cat

My cat Siobhan is missing since 23/06 in Manorfields Walk Clonee Dublin 15.She disappeared at 3.30am. She is neutered ,microchiped. She is shy and scared. She doesn't know the neighborhood well. I think she went in some house by mistake and locked and the people went on holiday. We left the Ireland for good. Now I am in Bulgaria with my two cats,she miss me . I had notify her vet in Hill crest veterinary hospital Coolmine Dublin 15. My phone number is 0872173121 REWARD FOR HER SAFE RETURN