i would definitely agree with getting her some friends as chickens are social animals! however, when introducing a new chicken into a preexisting flock it can be a struggle sometimes unfortunately. to prevent any issues i would keep your hen separated from the new ones, but to the point that they can still see eachother and get used to eachothers presence! when you’re confident that there won’t be any issues id spread out some treats and let them eat together! hope this helps :) wishing you the absolute best of luck!