"For the Ad Litem to claim that the tea caused the loss of potassium is a FARCE."
For him to claim it or for him to report what the doctors mentioned?
The cause of the imbalance was not clearly identified, but may be linked, in theory, to her drinking 10-15 glasses of iced tea each day.
"may be linked, in theory" is medical opinion, not medical fact. I work with research scientists and proofread their papers all the time, it basically means they have no friggin' idea what caused it.