She should see her Pdoc .. But no one can make her take her medications correctly.. That is all on her, her choice.

She is lucky to have you as a friend .... But I will caution you to not get sucked into her mental illness and issues to far.. It can quickly get out of control and can bring you down.

If she doesn't see her swings and says she loves her current medication you are unlikely going to change her mind.

Good luck