Child Tax Rules and Dependent Rule

Similar questions have been asked by divorced persons, and I'd like to ask as well.  I am the homeowner, and my adult children live with me.  My daughter, who will be 25 this year, lives with me with her son (my grandson).  She works full-time.  I am on medical leave from my job and losing money left and right due to not working.  I contribute more than I should financially in support of my daughter and grandson while paying all the household bills.  I understand the purpose of the EIC.  I'm still a single parent, but now instead of dealing with child care, transportation, and struggling to pay rent and clothing for my children, I am struggling to pay high-end bills like property taxes, care insurance, homeowners insurance, food, home maintenance, and other bills.  My income was too high to qualify for any tax breaks, and I don't know how my income taxes will look come the next tax filing season because I am not working.  My question is, since my daughter and grandson do live with me, is there a way that I would be able to claim my grandson as a qualifying relative and my daughter claim him for EIC purposes?