Why'd Julia go to the coffin at night? What was the point? Go the next day! And does the new mistress of the Old House really want to create a plague of vampires in the area, where she expects to enjoy her blissfully happy wedded life?
Julia couldn't take the chance that Roxanne would move her coffin. And as for the plague of vampires, Angelique has control over Roxanne (which is surprising, but that's another subject) and can therefore destroy her anytime she wants, so she could probably do the same thing with Julia once Julia becomes a vampire.
Are we supposed to be horrified by the thought of Judah/Gerard destroying Angelique? I suppose the idea is that if Angelique is destroyed then there's nothing to keep Julia becoming a vampire. But, much as I love Julia, I'd say the vampire fate for her is a reasonable price to pay for the joy of finally getting rid of Angelique. And I like the thought of Julia becoming a vampire and living through the next 130 years until she finally reaches her home time. Or would she do the right thing and give herself devampirization injections? I don't know, because strange things happen to one's personality when one becomes a vampire.
This was a very busy episode, with people dashing in and out of the drawing room/foyer area. Very tiring to keep track. And golly, if they're going to start using horoscopes here, there, and everywhere, then for the first time in my life I'll be glad that Dark Shadows got canceled.
