Just to clarify, for the sake of the thread, a person (i mean any person in general, not the OP) may have experiences that are from God, or themselves, or the enemy. It is the job of the Church to discern particular cases. They look at the fruit of the experience and the content, relation to Catholic teaching, etc. Each experience should get discerned, because for example someone may have received something from God, and had another experience that just came from their nature. In any case, this is why its important to have a spiritual director, to talk about everything in detail…online its hard or impossible to judge the reality of someone’s experiences, since we may even misunderstand the descriptions. Its something to speak to a priest about who could ask questions and understand what the experience was like.
I wouldn’t try to even decide the source of something described online unless it was extremely obvious, because I have no authority in this but also because I could be misunderstanding the description. I also don’t know the person. I’d recommend to anyone to simply speak to a priest and they’d be able to take it from there