Even though Betty Okonak Templeton was married to James Michael Jones in Feb. 1985, people reverted to calling her "Mrs. Templeton" after she and James adopted Carrie Dell. The non-use of "Betty Okonak Templeton Jones" has been viewed with similar disdain within The Mister Rogers Society at Yahoo! and these Episode Guides.
But this episode took Betty Okonak Templeton's name wrong by a further step. WGBH's Descriptive Video Service identified Templeton as "Betty Okonak." That was her birth name, but we never knew her until 1983, after her first husband (Mr. Templeton) passed away.