Hi Christy, welcome to the forum and thank you for sharing your story.
So sorry to hear about your dad’s addiction and how it’s affecting you and the family. Such a lot for you to cope with if you’re also supporting your mum and sister. I wish I had all the answers for you.
The adfam homepage have counselling support as do the Icarus trust, and Drugfam.
Please take care of your own health and mental well-being at this stressful time. Find time for you. ❤️
Lx