I have been separated from my spouse for 8 years. There has been no custody or child support ordered by the courts, thoughin 2018 I have started filing the papers regarding custody, child support and divorce. We have 1 child together. Our child has come to live with me this year and has spent 7 1/2 outta the 12 months (in 2017) living under my roof. I have been receiving child tax credits for this child since she moved in May. Can I claim her on my taxes?