I agree. My thinking is
HF gets arrested for supposed unrelated charge of drugs
Within 5 days we have an arrest of EA
That makes me believe HF was involved and gave up what he knew. HF wouldn't be involved in EA having a sexual motive.
I think HF gave up what he knew and it maybe matched what forensics they have.
Now since there's at least 2 people involved, who is to say there is not another helper.
If they know where christina is but haven't went for her yet, that's possible. They don't tell us everything. I wouldn't be surprised if they do find her this weekend.
My guess (and it's purely that) is that the Collin County Grand Jury met on Thursday and the evidence they had (remember the subpoenas the GJ issued for uncut media interviews gave a due date of Dec. 4) coupled with recently returned forensics was enough to hand down an indictment. Paperwork done yesterday, arrest made this morning.
If/how HF ties into this remains to be scene. I'm on the fence between he knows the who and the why but not the where (and it goes back to the money or a deal gone bad on his end) to it was an SO and has nothing to do with HF/drug deal.
If it comes down to a much bigger conspiracy involving HF and/or others, I won't be surprised but am not leaning in that direction right now. Theories have been changing by the minute, tho.