mobile

Hi everyone. I don't know if I'm posting in the right forum or not, but right now, I'm at the end of my rope and I've run out of things to try.
I lost my 18-year old sister last week in a car accident. I visited the accident scene with my parents and we found her phone. It was hard to
recognize amid all the scrap because of how mangled it was, but her S4 was there. Everything except the motherboard was destroyed, so we went
and put the motherboard into a new S4 to see if we could get any data from it. The phone worked for a while. It was able to boot to the lock
screen and it connected to our wifi whenever we walked into the house. However, it's passcode locked. We don't know the password to her google
account either.
I searched google for solution on how to unlock the phone, but the methods I found required that USB debugging be enabled, and of course, she didn't
have it turned on.
I found one method that could work. Aroma file manager. But it can only be flashed using Custom Recovery. Naturally I tried to flash CWM, and it
appears to have been successful (according to ODIN). But when I tried to boot into CWM, I got the "RECOVERY IS NOT SEANDROID ENFORCING" error and
the phone shut off. Now the phone can't get past the S4 logo. I'm not sure if this is a problem with the battery (it kept needing to be pushed for
the phone to turn on when we replaced everything) or if I screwed up the phone entirely. Please help.

TLDR; I tried to flash CWM on a Galaxy S4 and got the "RECOVERY IS NOT SEANDROID ENFORCING" error when trying to boot into recovery. Now the
phone won't get past the S4 logo and I'm not sure if I messed up or if it's the battery's fault.

Any help would be much appreciated. I'd like to thank everyone in advance for looking and for your help.