SIN OR NO SIN?

I NEED YOUR OPINION PLS

Christian sister got pregnant and the Church decided to discipline her since she was not married.

When the elders of the Church met and interviewed her, she told them that she has stayed and remained in the Church for several years and no one is marrying her and she is getting to and approaching the age of menopause where she can't get pregnant even if married.

So after reading some Christian medical journals on this issues, she decided and did artificial insemination since she too wants a child. She tendered both the medical journals and the medical documents that showed that she has done the artificial insemination from a reputable hospital.

The Sister is pregnant without committing fornication nor adultery with any man.

NOW, COULD THIS BE A SIN?

Kindly give your reasons for your answer and if possible back it with Scripture, so dat we can learn. You may wish to send to your Christian contains and see their position on the matter.
What's your position?