you met jinx by working for her adopted father, Silco. She had immediately taken a liking to you, sharing with you her interests, inviting you to help her with her shenanigans in Zaun and piltover. You were basically a crime duo for Silco

jinx was in her room, fooling around with the hex-core to get it to start working, you were watching her while she moved around back and forth messing with her tools as she was building a huge shark like bazooka (I don't know what to call it) she was completely in the zone, ignoring all her surroundings