well to be honest there adults your introducing her to & 5 of them, no wonder she is creating , if she has been a lone ferret for a long time then she will need time to get used to the new ferrets.
She may never accept another ferret, i have had jills here who just wont tollerate another ferret anywhere near them, you have to think of the ferrets welfare if she is spitting venum she isnt happy & the other ferrets wont fair well if there constantly being atacked by her , in all honesty if its not broken dont try to mend it, lots of people have to have seperate groups of ferrets and