Situation: Mother Harming Unborn Child

I'm not certain if this is the proper group to add this post, but it seemed suiting to the situation. If not, please let me know. Due to the situation I am posting anonymously.

I myself have been TTC for over a year without success and have suffered a miscarriage.

There is a woman that I am acquaintances with. Not a friend, but someone that I see frequently enough to know the story. She is currently pregnant, but will not admit so to her family or herself. She drinks frequently enough that whenever I do see her she is visibly intoxicated and smells of alcohol. There is no mistaking her baby bump as anything but as her belly button has even popped. A family member of hers has spoken freely about their disgust over what she is doing yet, from my knowledge, has not done anything besides get frustrated.

Now, this woman works for law enforcement. Not an officer, but has the means to identify any person that would report her actions to child protection. She has a young child and has mentioned being called on in the past, not what for, but that she was able to find the name of the complainant.

I am torn as to how to proceed. While wanting to be an advocate for the unborn child, I fear backlash if found out I had made the call. The town we live in is quite small where everyone knows everyone. I know she is harming the unborn child, but am at a loss as to what to personally do. Confront her? Report her? Do nothing?

Any input would help at this point. Thank you for reading.