Just realise that the overwhelming majority of people who go to gods or saints with diseases like this don't get cured in this manner; what about them? What does that say about the effectiveness of miracles?

There are plenty of situations that could have resulted in her getting better. Something to do with the travel, or perhaps the treatments started working, or perhaps for reasons current medicine doesn't know. Apparently, according to wikipedia we don't even know what the cause of lymphadema is. It could have been something she ate, who cares? People seemingly inexplicably get better from diseases all the time, and this one is no exception. These people wanting to attribute it to a saint or whatever doesn't mean anything much to me, and it seems much more likely that they are delusional or liars with regards to the events at the site and hearing the saint's voice and whatnot.