Well ... If she is living her life and doesn't think there is a problem then there is not much you can really do about to be honest..Its up to her to disclose her illness to any of her partners , yes they have a right to know but its her decision.

Lamictal is a mood stabilizer but its just not enough for some people to manage there own unique brand of Bipolar. Maybe she is on other medications that your not aware of ?

I know you feel bad about the lost contact with the little boy.. But in all fairness keeping up visits and what not is probably not in the best interest of the child.

I guess the best advice I can say is just offer support when/if you can . The last thing a Bipolar person responds to is being told what to do when they are manic. Sad but true.

I wish you the best