Rebbe Meir is enough of a source, being a tanna – his word is torah misinai. He said she is wrong – she was not a tanna; she was very big in learning and was nosei venosen with tannaim, but not every learned person is a tanna, and she definitely was not.
Rebbe meir said she was wrong for writing that she was an exception to chazal and set out to prove it to her. The ben yehoyada writes that he sent a talmid who was impotent and physically unable to sin, so it was harmless in that regard. He also tempted her in an appeal to her midas hachesed, not stam taavah. He did not expect her to lose her sanity and commit suicide.
As the drishah famously writes, exceptional women can learn gemara, like beruriah. She was not criticized for learning, rather for thinking that she was an exception to chazal’s dictum of noshim daatan kalos – she simply was not, as evidenced by her being nichshal.
AAQ, she didn’t put herself into a nisayon; rebbe Meir may have initiated it, but it was min hashomayim, as no one has the ability to harm or help anyone else without it being nigzar in shomayim.