I completely understand your perspective however, but I feel as though it's not warranted given the question asked by the OP, and factoring my response in.
In my opinion, there is a history of women and men that leverage Kijiji as a way to advertise their sexual services. What's included as part of these services is often called into question due to the form of advertisement. For example, Kristine's posts do not state anything in reference to being strictly professional, however, they do note she provides billing which suggests she's an RMT.
This is different from other individuals posts where it's clearly stated to be a professional massage, etc - so, there isn't a clear line of delineation between the two (non-professional/professional). I'd also say this is rather important when looking for a such service on Kijiji as there's definitely a variant of these services being offered under the massage category.
With this in mind, I think the OP did the right thing by leveraging this form as a way to ask the question instead of being put in an awkward position by asking Kristine direct. This is a matter of opinion of course, but is there really a harm in asking this audience?
As previously noted, I've seen Kristine and to tell you the truth, she is very suggestive even in person. This could be her flirty nature, but I seen other RMTs in a professional setting that do not cross any flirty boundaries, so I can understand the confusion.
Take this post for what it's worth, just an opinion. :)