When Cat finds the pink shoe and puts it on, she puts it on her left foot. Next scene, when Cat is searching through the dumpster, Sam bangs on the dumpster to get her out. When she pops up, she is now holding the RIGHT shoe.
Stacey doesn't recognize Sam from both iStart a Fanwar and iHire an Idiot. This can be explained if she sustained a head injury in the collision.
Cat says the "throbbing moon" occurs every three years. Nona said the first "throbbing moon" that she saw was when she was dating Nipsey Russell.