It seems that either the pig guards themselves or the number I had for some reason don't awaken the Queen Womant when they attack her. I didn't let them completely finish her, although I think I should have to see if they would. But they hit her for most of her health before I interfered, and all with her still sleeping.
Steps to Reproduce
Hire Pig Guards to fight Queen ant and send them at her without hitting her yourself.
This issue has not been confirmed by a developer yet.