More physical play in the post-season

[TxBktball03]

As a newbie, I have a question:

I've gone to see the two WNIT games held here in Houston this week. I've noticed that, with good reason, the ladies on the 3 teams I've seen have stepped up the intensity of play, but also the physicality. How do officials compensate? Those with post-season NCAA experience, I was wondering how much that phase of the season and the stakes involved affect how the game is played and how the officiating is tweaked to compensate...