How do you communicate with a bipolar?

How do you persuade a bipolar? What language style do you use?

How do you get them to continue taking their medicine when you are not physically with them?

This is in regards to my daughter. Like the title says, she can't maintain a dwelling or a job, she eventually gets kicked out. This has become such a huge burden on us. But when she is on her medication, she functions normally. The thing is...if I am not there making sure she is taking them, she is not going to take them. Even though she can see the harm that is being caused by not taking them. And this is a grown woman, not a child.

I don't know how to reason with her.

Plz help!