My child’s mother just posted a suicide note on Facebook, what do I do?

Our children’s birth mother just posted a suicide note on Facebook.

We have not heard from her (other than her posts on Facebook, but nothing directly) since before Christmas. We do not have an address,
although she has told us what city she is living in/near. As long as she has not moved to another state again without telling us. We do not
have a telephone number.

She is currently estranged from her family. Her mother also does not have any way of contacting her and does not have an address or
telephone number.

I have sent her a message via Skype telling her to call me and that I am worried about her. We have also called the police in the city in
which she may (or may not) be. They are trying to locate her for a Well-Being Check.

Obviously, any advice you have will not help if she is in extreme crisis and has done something to end her life. Assuming the situation
is not as dire, moving forward — what should we do???

My head is whirling and I cannot catch my breath.