So if you played in a Mexican baseball league and saw that USA was playing Mexico in some international competition you would be pulling for Mexico because of your teammates? Really?
Does that seem like an apt comparison to you? It doesn't at all to me.
Chloe has been in school at Mississippi State over two years now. She's been playing under this coaching staff, with a number of these players for much or all of that time. Now her entire college team, who she will play with for hopefully two more seasons is Team USA for an international tournament. They're about to play her country's college all star team, which she is not currently on but likely knows many of the players, for a gold medal.
Seems like a tough game to pick a side on if it was me. It also seems like apples and oranges to your simplistic scenario.