Why would that be the question, as she is obviously not moving at all and HToY refers to being allowed to move through the region containing such site, it does not mention any restriction on moving to the site?[lawyer mode]The question is not whether she is allowed to move there, it is whether she is restricted from moving there. [/lawyer mode]
And I think Wacho's distinction between regions with restricted and unrestricted movement ability is rather artificial, but moreover besides the point as Leaflock is not stopping at a site in such region it is a whole different case altogether. If the poor formulation on Leaflock means he may move through Hollin, well good for him, because of the poor formulation on HToY he may then be played at Ost-in-Edhil even...
...so notwithstanding far reaching consequences of this poor formulation on HToY, which should probably mention "is allowed to move to such ruins", I'd still argue minimalistically, that since Lobelia is not explicitly forbidden to move trough Cardolan, obviously as per Old Forest, whether restricted/conditioned or not is besides the point, she is not disallowed by HToY to be brought into play at Ruins in this region.
Unless there are very good reasons for it, gamewise, it seems to me a wrong practise to invent rules to fix holes that spring from inadequate card texts. I'd sooner see an erratum then, though I can understand CoE/NetRep does not want either, "clarifying" the rules in this way is like the Pope "clarifying" the bible...but I'm not a rules wizard, so please tell me if such distinction as Wacho makes is already in the rules somewhere that I don't remember.
btw. lawyer mode is always on in this forum section it seems
I for one only put on this mode if I think it's thematically correct also...