IMO, I think the boyfriend is a bit sketchy, however I don't think he had anything to do with her dissapearance. It sounds off to us now (now that we know for a fact that she's missing), that he wouldn't have reported her missing right away, however I think if I were in his shoes and my significant other was missing, my first thought would definitely not be that she has vanished off the face of the earth or that somebody had done something terrible to her. I think when he first couldn't get ahold of her, he thought she must be elsewhere, at a friends or whatever it may be, and in fairness, it takes awhile to get ahold of all of her contacts, friends, family, to see if she was there or if they had seen her recently, before coming to the conclusion that she is in fact missing. As time went on, obviously he got more concerned and realized the severity of the situation and that's when she was reported missing (I'm not sure if it was him who reported her missing or someone else). On that note, I find it very odd that he wouldn't have contacted authorities after she had both been missing for a day AND he received that odd text message, that should tell anybody that something is off. People were also mentioning the fact of him refering to her in past tense, I don't mean to sound negative but honestly, at this point, how many of us believe she's still alive? I'm going to be honest in saying I doubt he still thinks she is, and therefore would refer to her in past tense.
That being said, my opinion on the matter is what somebody else had already mentioned, she went to collect the rent, called them, they asked her to meet them elsewhere, an argument ensued, tempers flared, and then something terrible happened. I believe it was Blakes doing and Victoria was there and simply witnessed it (also possibly helped of disposing the body after the fact), as she was terrified for a few reasons; 1. that she had an outstanding warrant for her arrest, 2. what she had just witnessed (something very traumatic) and 3. that Blake would hurt her and/or her family if she were to go to authorities (plus the fact that she was there with him when the crime was commited and I highly doubt he would let her leave long enough to go tell the authorities).
As far as a body goes, I believe it's here in Nova Scotia.. somewhere. Somebody mentioned the airport, that is a great guess, as it's on the way out, somewhat secluded, etc. I really don't think they would drive all the way to Ontario with a body in their trunk. Quite honestly, I'm not sure if the body was ever in the trunk/car, if it was, there would have been blood and they would have been charged already. I think after he did whatever he did to her (im assuming either hurt her badly enough that she didn't live, or his temper was so out of control that he did something stupid such as stab her, etc), that he freaked out and realized he had to get rid of the body right away. I don't know where it would be, in fact I hope she's still alive. In any case, I hope her body is found so the family can have some sort of closure.
As far as evidence/investigation goes, the police must be on a hot lead right now. I'm sure there must be thousands of tips pouring in from multiple provinces. They would have any surveillence video from where her bank card was used, highway cams, toll booths, phone records, etc. Now I don't work for LE, but I am familiar with some missing persons cases and I know they can't just charge someone without an overwhelming amount of evidence (or beyond a reasonable doubt) and obviously, all these clues, tips, videos, records, must be fully reviewed, analyzed, etc. It's very difficult to charge someone with murder if you have no body, no witnesses and no confession, however it does happen (actually, it just very recently happened to somebody I know, and it took them 8 months to charge them with murder because of these missing factors). My assumption is that LE is still in the process of putting together all of the evidence and as soon as they have enough of it, VH and BL will both be charged with second degree murder. I don't feel they have a need to post an overwhleming amount of information to the public (such as surveillance video), as they already have a good idea as to what happened to her, they just need the evidence to back it up.
This is all in my opinon and I pray Loretta Saunders is found safe and unharmed, unfortunately I can't help but think otherwise. My thoughts and prayers are with her family.