I helped raise mg granddaughter last year. Her mother did not work in 2025. Can I claim her on my 2025 taxes?

I paid for her rent, internet and phone bill. Her lights, gas and trash are included in her rent bill since she lives in low-income housing. I also paid for her groceries when her SNAP benefits ran out. I do take care of her approximately 6 months out of the 2025 year. Can I claim her on my taxes now? And will their be any repercussions for her mom in the future, for filing taxes?