If she'd had a moment to think about it then Cassie would have severely doubted she could reach the means of her salvation but fortunately adrenaline was a far more powerful thing than her belief in her physical capabilities. Lurching forward, one hand still holding tight to him, she reached and grabbed blindly, her fingers managing to get purchase around his wand before she lost the grip in her supporting hand and tumbled back, almost pulling him in with her.

She let go of him. It was the only way. If he fell then Theo might too.

Her head ducked below the surface of the water again but this time she had his wand in hand and, with more instinct than intent she drew an arch in the water and felt her body propelling itself out of the water rapidly, landing a few feet from her blanket. Every inch of her ached and Merlin she could imagine how furious Miriam would be with her for being so stupid, but she was breathing and with her last strength she pushed herself up to glance over her shoulder.

"Theo!" Her son, apparently less concerned, ran towards her and together they fell into a cold, shivering lump. She would have to get him home right away or else... no, that was too terrible to think about. "Thank you!" She said emphatically, tears mingling with the cold water on her face as she looked up at their saviour and glanced towards his wand, thankfully intact on the ground. "I...Just... thank you."