You could tell this individual that you recognize your imperfection and that is way you attend mass regularly. You need all the prayer you can get! You could go on to say it is a huge challenge in “your environment” to be holy when there is so much negativity around. Maybe you could try killing with kindness and encourage this person to join you next time.
Try to keep positive, remember it is a good thing in the eyes of God to be persecuted on His behalf, keep doing the right thing!