Black Cat Donomon co. Roscommon

Hi I lost my black female cat back im October in Donomam area co. Roscommom when I moved. She is extremely slinky and getscscared very easily as was saved as kitten from bad owner. She has slight tiger (tabby) stripes of brown in direct sunlight but is black sleek and very slim. She is called Bella. I do have a microchip number which i need to update details of since moving which has our old uk address on. Any help appreciated please. Her collar came off just before we moved again. She was and will be jitterish. Many thanks for your help, Lucy