There was a two (or maybe three) parter with Jaime/Blue Beetle that I never got to do before the rug came out from under us - Steph and Jaime bumping into each other at Spring Break (Jaime had snuck away with Paco) and h-a-t-i-n-g each other. But when Black Manta attacks, Blue Beetle and Batgirl get along great.
Later in the series, there could/would/should have been a sequel story with Jaime visiting Gotham U. and (through a series of unfortunate events) Steph winding up bonded with Scarab, and Jaime having to prove his stuff as a “normal” to save Batgirl and the day.
Also, “Star City Sirens” with Mia/Speedy calling on Batgirl for help when Kara/Supergirl comes down with a case of Red Kryptonite poisoning.
THIS MAKES ME SO MAD WE COULD’VE HAD JAIME/STEPH
real friendship is sending them a link to something terrible so you can both be traumatized at the same time