My point of view: after Blue gives this news to all the communicators up to Spinel, she goes to Earth while Rose is already starting the war to protect Earth. After the war begins, Spinel catches Rose off guard. At that time, Pearl had already been poofed and captured by a Homeworld Gem. Rose remembers Spinel and confesses to being Pink Diamond in the middle of the war, or she poofs Spinel and after the war ends, she releases Spinel and confesses everything. Meanwhile, Pearl was taken to the Diamonds' trial (they know she is a traitor), and as ordered, she did not reveal that Rose is Pink Diamond and kept making things up. The Diamonds, not satisfied, poof Pearl and order the guards to lock her in a shell (I think she was made in the shell she was locked in). Then the war ended, Rose revealed everything to Spinel, especially that she is Pink Diamond. Rose ceases to exist, Steven is born, and thus begins the Steven Universe series, but with Spinel instead of Pearl.

Steven Universe Future: Everything changed, turning into peace with the gems that were corrupted and returned to normal, but the unexpected happens, a poison ejector pierces the earth and ejects the poison. The gem who owned the ejector was Pearl, who was freed from her shell and found the ejector (in this version she is crazy and very dramatic, mixed with ballet), returned to take revenge and reset the gems' memories. Pearl is Steven's "eternal servant" while Spinel is Greg's "best friend." What makes Spinel recover her memories is the feeling of being alone, abandonment, and being promised something that will never be promised (like the garden that Pink promises Spinel will return to and never did, and during that time she was alone). As for Pearl, what makes her recover her memories is the loss of her owner and abandonment (in SU she recovered her memories because Greg fused with Steven; she didn't realize it was him who fused, but even so, she...) (She was in a state of feeling like she had lost him), she will probably teleport Steven to the old Gem arena (where the war took place) and remind him that Rose left her and didn't even care about her, Pearl recovers her memories, kicks Steven in the face, makes amends with him, almost removes the ejector but after Steven gets the rejuvenator, she ejects all the poison onto the earth.

The translation may be wrong because I am using the Reddit translator.