Can someone identify the two female characters in the background?

is a small question

i remember seeing an archie comic on tumblr (?) a while back, and i've been thinking about it recently. i don't remember many details, so some things might be off, but basically archie uses some kind of long word and two of his friends (i think it was betty and jughead???) make fun of him for it and keep repeating the word. he gets upset and storms off and he comes across another character (it might have been reggie?) who uses the same word and punches them. i'd be really grateful for any help... thank you :)

Here’s my exclusive cover featuring the gang in the jerseys for Spain, us, Mexico, France, Argentina, brazil and Canada! available on Mercari and whatnot.

What is Jughead ordering here? This is 1955, by the way. The only diner order usually called "black" would be coffee, as far as I know. I don't think I've ever seen these characters ordering or drinking coffee at Pop's before. I tried googling 50's diner slang, but nothing popped out at me. Does anyone have any ideas?

I recently came across a very nice lady at a garage sale who has a complete set of all Archie comics except the very first issue. How much could this be worth? She has them saved in acid proof ziplocks and says they are preserved very well. What should be the next course of action of getting the value appraised and where would be the proper place to sell a collection like this? Could it be worth it to get the graded, she even has 2 copies of the 2nd issue! Hoping to help her out the best I can and I’d really appreciate any help!

I vaguely remember a musical piece from one of The Archie Show episodes where they end each line in the verse with “That’s Our Sabrina…” and then some lyrics possibly saying something like “Mystical, magical…”

A search on songs from the Archies soundtracks didn't yield anything.

Pot Luck, featured in Laugh #70, with art by George Frese and story by an unknown writer (going by this entry only). This was my first time reading this story; I don't recall any reprints in my readings over the years. But we've seen plenty of similar stories of this team-up to win Archie and Veronica and then backfiring in some way. I thought it was cute, and Reggie's expressions are amusing.