United Kingdom, Aug. 9 -- Kelly Clarkson is determined that her kids will "come first" following Brandon Blackstock's passing.

The talent manager died on Thursday (07.08.25), aged 48, after battling cancer for more than three years, and Kelly is now focusing on the wellbeing of her kids.

A source told Us Weekly: "It has been draining, exhausting, emotional [and] devastating."

The 43-year-old star - who had River, 11, and Remington, nine, with her ex-husband - tried hard to balance her TV career while taking care of her family, amid Brandon's cancer battle.

The insider explained: "A big part of it was making her schedule available for transporting the children to visit Brandon, and all of the emotions that came with this difficult time...