You also can’t bury someone without an autopsy done. The entry and the exit wound will help determine the angle and the distance the bullet travelled. The Palestinian authority is refusing to turn in the bullet under the pretext of not trusting the Israelis. That doesn’t look good. They should ask for international investigation.
You need to update yourself.
Autopsy already performed. The PA said they wanted to international partners to be involved including the US, and hinted they would take that to the Hague.
As for the 'evidence', it's fairly clear that it's on the Palestinian side. Videos, eye witnesses, investigations by Al Jazeera and B'Tselem and even Israel backtracking on initial claims all point out that Shereen was likely shot by an Israeli soldier. Latest report by Israel is that it's 'very likely' she was shot by an Israeli soldier, after their fake IDF propaganda video was exposed. There's no evidence there were any Palestinian militants in the vicinity where she was killed.
I mean, I'm not here to play defense for corrupt PA, but it's really stupid to expect them to turn the evidence to Israel. Come on. It looks 1000x worse if they did. Cooperating with occupiers who likely killed her and always absolve themselves. What a joke.