My family has grown

I have been contemplating if I should do this. I have talked to others, prayed on this, but I can't think of any other way. Back in July of 2021, my grandson came to live with us, his sister was staying with her other grandparents. In February of 2022, she came to live with us due to health issues with the other grandparents. We were granted temporary guardianship. That will end soon and circumstances now require us to go through the court system to obtain custody. Plus I need to find a place to live where they do not have to share a bedroom. There are a few family members who have been very helpful, and I will always remeber that. Please help if you can.