Care for a very loving but anxious and reactive dog

We are looking for an occasional care for our small rescue dog - she is a very loving, smart and gentle girl, but with lots of anxieties and fears. She is very low maintenance when at home, but walks can be challenging. She is also afraid of other dogs and has separation anxiety. We are looking for a sitter who will be able to take her into their home occasionally. Ideally with a garden and without other animals.