The weakness that Katherine saw in her mom when she first exited the plane became physically apparent when she got out of the golf cart and went to walk up the stairs to the castle. Lia tried to not let the pain she was in show, but Katherine knew her mom well enough to see that she was struggling.
Not wanting to point it out and make her feel embarrassed in front of Marcus and Charles, Katherine walked up to stand next to her mom and wrapped her arm around her waist to help hold her weight and to give her mom someone to lean on if she needed it.
Lia gave her daughter a thin lipped smile in understanding, and Katherine held her just a bit tighter.
Occasionally, Lia could not help the grunt or whimper that would escape her lips as she took a step that caused her too much pain. Katherine had never seen her mom so fragile as she was at that moment.