JKSManga
I don't think Richard started this particular rumour! Quinn hasn't mention it yet, but Dhampirs are (according to Bliss) naturally powerful against Immortui and his Demons, so the rumour may have well started with Laxmus and Magnus.Also, Bliss has been involved in Jessica's life since she was little; meddling witch...
immortui wanted to kill erin through zero and it's most certain that she is a threat to immortui and we'll it may be the same for Jessica or may be something else entirely......but the problem is immortui feeds on dead and if somehow magnus is able to open a portal then it will become chaos as many of the demons from that world have the power to kill celestials. Only few people could with them and as mentioned earlier immortui army seems endless....And the best way to find magnus is by quinn contacting mundus asap and tell him the situation. Quinn cannot deal with immortui without the help of mundus or the ancient ones and it could be possible that somehow immortui could control quinn's power as he is a vampire.
Eno probably didn't want Immortui meddling on earth cause of dhampirs. I remember that dhampirs aren't just the natural enemy of vampires but of all creatures created by Immortui. I remember that Flora was tossed into Immortui's realm where the boost to her power was so immense that she just exploded.
I could definately see Richard starting a rumor like that, possibly on the word of Bliss, or it could of been Laxmus &/or Magnus, having been given the informations from Immortui himself.I just hope that Quinn can protect Jessica, because she is a good person, and doesn't deserve to be in the middle of Quinn and Immortui's war.I would be surprised if Bliss showed up again, meddling in more innocent lives, just to further her own agenda.