Need advice on client with SUD

I need some advice, I have a case management client who has substance use disorder, she is working with me to try and get her children back from dcs custody, but she’s not ready to go to a rehab/treatment facility. How do I continue to encourage this client to take that step without pushing her away, and how do I personally let it go— I’m having a hard time not feeling disappointed that there’s bed space for her and she’s running away from help.