A. Emina could sigh, quite audibly so, and shift her bag from one shoulder to the other - thus, as anybody and everybody would (should) notice,  signalize that her current situation was a rather uncomfortable one. To put a cherry on top, she could relocate its position with a quite drastic outcome - one that could pull fabric to the side and enlarge the territory of her cleavage. That process would require plenty effort, however, and attracting attention to her chest could lead to dire consequences should Blondie be of conservative dispostion (didn't look the part but who could tell for sure, no?). B. She could bite down on her lip, slump forward, straighten up again and, consequently, clad herself in a 'stubborn-coat' - the strong woman suffering, yet trying; awfully heroic. Pitiful, too, and efficient in that aspect. But what if Blondie was a complete asshole? A would be the more suitable option in that case. C. Emina could just drop her bag. Just - drop it. Stomp on it, perhaps. He'd think her crazy, certainly, and confront her - she'd feed him a story about what a gruesome day it had been and - bla, bla, bla.

Teal hues fixed on the traffic light, one could merely wonder which option to instrumentalize. In a matter of seconds, green shimmer would pulverize her plan of dumping a bag stuffed with books on someone stronger - she had to act quickly, swfitly, and effectively. Glancing down at the heavy weight burdening her (clearly) fragile body, the Serbian decided to go with a combination of A and C. 

Step 1. Relocate bag. Step 2. Invade his personal space under false pretence (loss of balance). Step 3. Drop the bag on his feet. Step 4. Pretend to be embarrassed.

"Oh gosh - I did not - is your foot okay?"

Green light could arrive.