The correct answer is:
Since Alice’s opponent crossed into her court, Alice’s team should win the point.
From The Code, Item 19:
Item 19 says that “a player shall concede the point when that player touches the net or opponent’s court while a ball is in play.” While Alice’s opponent didn’t touch the net, she crossed over into Alice’s court. The Code does mention that the opponent (in this case, Alice and her partner), cannot make the call. It’s up to the player who touched her opponent’s court to admit what she did and give up the point.
If the ball had crossed over the edge of the net around the doubles alley, and the opponent was able to hit the ball into Alice’s court without touching her side of the court, then the point should continue.
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