Thank you for responding. Unfortunately it is not the city being in lockdown, I haven't gotten that far with Lin yet but your description gave me enough to rule that out.
I just literally cannot go to the park to tell the woman who was gardening that I completed the task she gave me when I first met her. It keeps telling me to go back on another day but I have tried every day.
Had a look at the wiki and there isn't much on that character.