I watched the first set of Heather and was quite impressed considering the length of her layoff. Was struggling with doubles, quite a few foot faults in the set I saw, but when she got the first serve in it looked decent. I just checked the stats and it said 75% first serve points won for the match.
Going by how long Heather seems to have been training for, going by her socials, the layoff was longer than needed but probably timed to get the protective ranking. Also sometimes being able to rest the body for a prolonged period without the weekly grind and travel is probably a good thing.