If I understand your situation, you recently moved into a condominium complex and started going to the church parish which serves your neighborhood. You met a woman who lives in your complex and goes to the same parish and you thought the two of you were becoming friends. Alas, you discovered over time that she has it in for you. You feel degraded because she spreads rumors about you which you say are not true. Apparently, one of the rumors is that you have a terrible temper, but you hide it well.
Now, forgive me, but I must ask: Did you happen to have a temper tantrum and was your anger directed at her? If yes, then try apologizing. If no, then go about your business, do good deeds, and demonstrate to others that you are cool-headed and that you speak with a civil tongue. People will respect you, accept you, and love you for who you really are. Even Ms. Rumor-Spreader may come around.