Barking Westie

My wife and I adopted an 8 yr old Westie mix about a year and a half ago. She’s definitely hard of hearing with not the best eyesight.

She’s a bit of a barker-which we attribute to her not hearing or seeing well. She likes to sit in one spot in the yard and just bark and enjoy the sun and the vocal musings of her people. Now the question.

Whenever we have visitors, she goes nuts-she barks non-stop and goes after feet and legs. Not really a danger, so much, as we had to have multiple of her teeth removed. She might gum someone to death though. We generally place her behind a dog gate. Once calm she can come out.

But she only does this if my wife is present. If it’s just me, she fine and happy with company, including no barking or lunging. Including people of both genders entering our home. We are both women, FWIW

Thoughts? Any ideas on how to correct?