I agree that the new evidence found by the BoHI and Meldrum-Hanna is not very strong. There's a rush on now, after Serial the podcast etc, for every media outlet to have a true-crime investigation which changes public opinion. But I'm not sure Tegan Lane was a good case to pick.
There are lots of proven wrongful convictions needing attention, lots of missing people whose families don't have the money or social connections to get help. But I think some people identify closely with Keli Lane - a nice girl from a nice middle-class family who played a nice sport and had a drop-kick boyfriend. So they want to help her as much as they'd want someone to help them if they'd had an unwanted pregnancy. Which is good-hearted and generous of them!
The prosecution should definitely have handed over all the recordings of Keli, and they shouldn't have started proceedings until the police were satisfied they'd exhausted every possible search option. But I'm not sure that's enough for a new trial or a pardon.
The comment by Harry Palmer
on this article that Via Marple highlighted for us, raises a good point: Lane's own story (the current version, at least) is that she did not abort in time, was not willing to make the effort to adopt out Tegan properly, didn't make any effort to follow up that Tegan was doing ok with her biological father, and lied for years about the real location of Tegan when it could have established that she was safe and well. Even if she didn't want to raise Tegan, she still had a duty of care which she thoroughly neglected.
I don't believe her story, but if it's true she needs to accept that she is the only one responsible for the situation she's in now.