Why would a nice girl have a name like "Choo Choo?"
I think this art was by Ed Dobrotka (1917-1977), who did some pencils but mostly worked as an inker in the Golden Age. This silly little episode was from MODERN COMICS# 58, February 1947, a Quality comic. MODERN started as MILITARY COMICS, headlining BLACKHAWK and just packed to the staples with death and destruction and heroism and sacrifice. That all seemed stale to the readers as soon as the war ended, and the title moved to light comedy. By the time of this issue, the Blackhawks still held the cover and the lead story, but the rest of the comic was comic. (Does it ever seem odd to you that stuff like TALES FROM THE CRYPT, BLAZING COMBAT and CRIME DOES NOT PAY are all called "comics?")
CHOO CHOO seems to be a sub-genre that was very popular in its day and which still has appeal... the Gal Pals, two young women who get in and out of trouble (mostly in). One is usually the more level-headed and reasonable but she gets suckered into her friend's crazy schemes. An even further sub-division is the Friendly Enemies, where the two gals are mostly on good terms but not above a little double-dealing and back-stabbing, particularly if they are both stalking the same guy. The Hollywood setting for Choo Choo and Cherry (ack, those names) always is good for some mileage.