With the healthcare of 345,000 vulnerable children and their parents at stake, Connecticut Gov. M. Jodi Rell is engaged in an showdown with legislators and healthcare advocates. The Rell administration took a hard slap a week ago at critics of her Charter Oak Health Plan for uninsured adults, demanding the critics turn over e-mails and correspondence. By demanding their e-mails and correspondence, Rell made clear that she distrusted the motives of the many critics of Charter Oak, a new program she has linked to the much larger HUSKY.