This situation is not a good look for western response in general. The world is watching. Reminder that Srebrenica was 8000 deaths, but 17100 palestinians are justified losses.
It's very normal for EU to be pro-Israel, that's EU's official position and IMHO it's the correct one but EU's position is also pro-Two states solution and EU has significant humanitarian missions and political support for many of the Palestinian demands. Some EU countries are also very sympathetic towards the Palestinian cause and some countries which have huge importance for EU, like Turkey, the issue is very emotional.
Very wrong of Vdl to act as if EU is all-in for the Zionist aspirations. As EU Commission president, should have strongly condemned the terrorist attack that Israel suffered and offer any help possible and at the same time she should have pushed for a solution of the root cause(Israeli occupation and extremist antisemitic politics seeking the demise of the Israel - both unacceptable).
Maybe the bigger lesson here is that you should never go all-in on one side of a very complex issue. A kind of an issue where the rights and wrongs are quite evenly distributed and there's no way you end up on the correct side of it. Whoever-pro you are, you lose and she lost.