me and my mother change clothes together in a room private is it a sin no or yes strictest answer possible even if we were naked
Strictly speaking: yes, it is not proper in Jain Dharma for a householder.
In Jain discipline, intentional nudity or changing clothes naked in front of another person, even a parent, should be avoided. A Jain householder should follow modesty, restraint, and dignity in conduct.
So the strictest answer is:
- Yes, it is improper and should not be done.
- It is not the conduct of a Jain layperson.
- If it happens only out of necessity or by accident, the karmic fault is less than if done carelessly or deliberately.
- The safest Jain conduct is to change clothes privately with body covered.
If you want the answer in one line: Yes, avoid it.