Thank you for your reply.
It sounds like your friend exhibits mood swings and erratic behavior at times. You've known her for many years since high school. You've dated her before. You really care about her. She's come to you and sought a relationship with you five months ago. Then she's withdrawn and rejected you all of sudden again. She's threatened to take a restraining order against you.
She may have Bipolar
disorder and Borderline personality disorder
(BPD) features as she exhibited this erratic and emotional behavior towards her boss as well.
Perhaps, she may have problems with intimacy and relationships in general.
If you let her go now, she may come back to you again.
I can see you are worried about her. Your obsession with her may have a lot to do with her volatile behavior.
Yes, she may need help and support from a psychologist/counselor and her close friend like you.
She may be depressed now.
To note, it's very difficult and stressful to have a relationship with someone with Bipolar disorder or BPD as their mood and behavior are unpredictable, explosive and/or erratic.
You may have to ask yourself if you can be patient with her behavior.
The book Loving Someone with Bipolar Disorder by
Fast & Preston may be helpful for you to read if you CHOOSE to pursue a relationship with her OR reconnect with her in the near future.
I hope you get support from a psychologist or counselor.
Please let me know if you have more questions or I have overlooked any. Warm regards,