"The same," Tyrith said with a nod. "Your voyage together will, I think, be easy. Gods willing, it will be a short wait, and soon enough you'll have your wish." He resumed his seat and studied his daughter closely for a moment. She would make a good queen- pretty, quiet, diplomatic, and loyal to her family.
He thought of the Starks again and felt a slight pang of conscience. William was a good king, true, and no chance of Targaryen madness in the Stark blood, but this was an opportunity the Lannisters had been awaiting for centuries. Time the realm had a Lannister queen to erase the legend of the dark Cersei and her chambers of monsters. "Are you sure you wish to do this?" he asked, gesturing to her sleeve. "If this venture fails, you may find yourself adrift in hostile waters."
The idea of his daughter being accused of murdering her young cousin was certainly something he'd considered. Though he didn't doubt his ability to get her safely away from the Keep should it be needful, it would hardly be to the family's advantage. Nor did the fact that this manner of cure would if successful go unrewarded sit well with him. He supposed while Toria administered the elixer he should go seek out his goodbrother... but what to say? 'You have realized your child is poisoned, haven't you?' lacked something in the way of consideration, perhaps.