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You do not need to worry about any danger to a pregnant person who comes in contact with your home. Diseases that would affect a pregnant person are transmitted by cat feces and your cat is not spreading that around.
You can always have the anal glands removed if they are a constant source of irritation for the cat. It's done all the time.
If the problem got worse after expressing the glands, she might need an antibiotic to help with the problem.
There are many more solutions to this problem than taking the cat to the shelter.
Let me know if you have more questions.