Dad exposed at work

Mom called to let me know that dad has been advised he may have been exposed while at work back on 4/3/2020, so he was advised to self-quarantine. I explained what it actually meant to mom and sent her a video of what to do if you have a family member who has been asked to quarantine themselves. Mind you- last Sunday (Easter), he and mom went to Bill's for dinner, smh. I also explained I would do more research about this but suggested dad should contact his doctor now or some type of coronavirus hotline to see if he needs to be tested and/or follow the self quarantine steps outlined in the youtube video I sent her. By the end of the call, he mood changed bc I think I scared her and she is finally realizing what's at stake. I hope I'm wrong.....I really do.