Is it right for parents to force religion on their adult child?

I’m 21, employed and getting my degree next year. My expenses also go towards my uni so it’s going to take time to move out officially but still saving up. Im living with my parents for the summer. My mom snooped in my room and found a pride flag. Ever since then, she’s been taking me to church and does everything in her power to break up me and my girlfriend (which worked). She’s been crying, threatening, and making me feel guilty for not believing what she does. I feel too miserable to move on with life.

by the way I am open to learning about religion, but the more she forces me the more I want to run away from it..

Is it right for parents to force religion on their adult child?
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