wow, my son has gotten a problem dog recently too.

get a lot of books and videos from your library on dog training- the Uncle Matty ones were my favorites

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Crate training might help
or a smaller are where she stays unless someone is actively playing or spending time with her

Yes - one of you needs to become the alpha dog - but it doesn't mean being mean to her - just firm and consistent & confidant
It's the hardest thing to explain- it took me years to really get it and I don't know if I could fix a problem dog- it takes a lot of time & work to turn around a troubled dog

use time outs for her if she has a boo boo.
small room or crate for time out

the aggression to others is the most concerning - esp from a safety and legal standpoint
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definite time outs for her - to a crate or small room until guests leave or before they come in -many people put their dog in a crate or laundry room, garage , kennel??
when they have company

She needs to have a place of her own where she feels safe and is secure.

and a designated potty area- when she wakes up- go potty , after meals- go potty