Socialization while WFH and not many visitors

I work from home, I also am in a relatively new city and do not have many visitors at the moment and there is a dang snowstorm! The snow will subside but causes issues periodically with getting her out to slowly desensitize her. I seem to have a situation that is making it difficult to socialize my foster fail. She is a 7 month old potty mix I’ve had for 1 month. She’s not reactive to dogs but does bark at people. She doesn’t lunge or growl and just barks and cowers. I of course don’t want this to turn into extreme reactivity. I did hire a really great trainer through my rescue but aside from my trainers advice curious what other folks may be doing. I was looking into have a go walker come over and get slowly introduced to her using the right/recommended protocol but unsure!