If your wallet was compromised then your first step should be creating a new wallets, downloading the keystone file, printing private keys and then keeping them somewhere safe!

Just let go the previous wallet as you might think that hack was old stuff now and the air is cleared ! No its not like that, if it was hacked then you mistakenly inserted your private keys into the phishing page and thus hacker still might be carrying your all info! So better to change the wallet.

MEW is very safe, but it is human error that compromises everything.