generally speaking allowing non-free roaming animals just as reptiles is generally ok overall. i know my L.L. does not allow cats or dogs, but we were lucky when we brought up the snakes to him. although he is not a snake person at all he is curious about them, but his first question was "if someone owes me money can i bring them over and put their hands in their cage to scare them to get my money", LOL he was disappointed when i told how BP's are. On average i do not divulge what i have unless directly asked about them. and was concerned when he saw the rack and put 2 & 2 together, however he was cool with it and knows there will be more racks coming and knows my intent on breeding them here. but considering we have rebuilt the lower half of the house after the flood last September with little help from him other then supplies, i doubt he will consider throwing us out over ours.
My suggestion would be to talk with her more about it and find out why she is against snakes in a general stance. obviously keep yours hidden till you can hopefully work something out. chances are he is expecting a 15 foot burm in your place, not a few 5 footers. however he may be going on local ordinances as well that prohibit snakes in general. and seeing you live in PA, i will tell you that a few towns/counties do prohibit them, like folcroft, glenolden to name 2 that i know of from personally talking to the township. to find that out i would suggest you have a friend who does not own anything like this contact them and inquire, i say this because they will want your name and address and could possibly swing by to seize the snakes on you for trying to do the right thing.
Good luck and keep us posted, worse case, add tome doors with a lock to the front of your rack, and put some NRA stickers on the front, maybe he will think it is a gun locker.