I don't like the idea of banning anyone, but Faith hss in the past asked to be banned from the science fora. If she asks again then I see no reason not to grant the request.
There is no need to ban Faith from the science fora, she is certainly capable of simply not posting there. Banning her from that side will be used by her as as a crutch, much as she uses Original Sin and the Fall.
The facts are that she is not capable (and this is not her fault, the YEC/Biblical Creation/Biblical Flood concepts cannot be defended scientifically, they are simply wrong) of debating under the rules that science imposes. That does not mean that she should be prevented from trying.
Aslan is not a
Tame Lion