Tenant lied on application

[James Green]

I  have a new tenant that's been in our unit for a month. On her application she stated that she had no dog. We recently found out that she has a dog. On our application any pets have to be approved and that there is a extra monthly fee. When we kindly brought up that on her application she didn't check that she wanted to have a dog, she stated that it's a service dog.

-Her "handicap" is not plainly visible in any way, so are we legally able to ask her why she needs a service dog?

- Can we charge her the extra for the "service" dog?

-Is this a breach of her contract because she lied?

Also she told our PM that she was divorced with 2 teenage children. We have everyone's name on the lease as occupants. She ends up disclosing to my wife in a general conversation that she is married & that her husband is deployed oversees and won't be back for x months. So this possibly puts us in a position of adding an occupant to the lease, only because they are married, but we have no idea who this person is.

-Do we have to add the "husband"?

-Is this a breach or can we void the lease and get someone else in the unit?

She seems to be a nice tenant & the dog is definitely friendly. I'm not sure if these are actual red flags yet, she's only been there a month but I want to be prepared.

thanks