This sucks for her, for NXT, and for wrestling fans in general. She was a great act for the company and there was no real closure to the storylines for her as she lost the title and was done.
We don't know the whole story. I'm willing to bet that her WWE contract has morality clauses in it, which the company deemed her site was breaking (ironically enough Kevin Nash's podcast talked about morality clauses in the most recent episode). If it comes out that this came out of left field without any prior reprimands and there was no sponsor backlash then yeah it's shitty. If they had told her to tone it down and keep some things to the imagination and she blatantly refused then yeah she deserved to be punished. We don't know, and we won't know.
I have seen posts comparing it to Daniel Bryan. If that's the case then good, they gave him a few months off and he returned in a better story and made a bigger career for himself than if he didn't get fired. For all we know that's what will happen here and she'll return to Smackdown or RAW in a couple months. I really hope so as she was really coming into her own and the trio as a whole was a great act.