Question related to Peanuts FAQ

I have two questions related to the page "Peanuts FAQ" https://www.peanuts.com/faqs/  

(1) "Does Snoopy have any siblings? If so, what are their names?"

Your answer is "Snoopy’s siblings from the Daisy Hill Puppy Farm are: Spike, Belle, Marbles, Olaf, Andy."

But you did not mention Rover and Molly.

They appeared in 1991 Video "Snoopy's Reunion".

Is it because in this instance, the creative decisions regarding their appearance were decided by the show’s animators, not Mr. Schulz?  

However, in a comics strip by Mr. Schulz on 1989-06-18, there are eight puppies signed on a Father's Day Card to Snoopy's Dad. This shows that Snoopy has seven siblings.

(2) "Does Charlie Brown have a girlfriend?"

Your answer is "Actually between 1990 and 1991, he did. He met Peggy Jean at summer camp. He was so enamored (and extremely nervous), that he introduced himself as Brownie Charles, the name by which she would know him until she moved away. Throughout their relationship, he was continually torn between Peggy Jean and his affection for the Little Red-Haired Girl."

How about Emily (1995-02-14)?

(Of course I know that Patty (1951-03-22), Violet Gray (1951-04-18), Peppermint Patty (1971-03-08), Marcie (1979-07-22) and Royanne (1993-08-17) are just unrequited love towards Charlie Brown.)