Restore Stock Samsung APPs on Galaxy Tab 10.1 4.4.2

Hi all,

I used Titanium backup to clean and remove bloatware from my mother tablet (GT-P5200)...
Model : GT-P5200
Android : 4.4.2
Bande : P5200XXUBNK1
Version : KOT49H.P5200XXUBNL1


Shame on me, I didn't make backup for some applications like : My Files and Gallery...

And of course, first reaction of my mother was : Oh finally, i prefer "Gallery" to "QuickPic", and I dislike VLC, I prefer "My Files" to access to my videos... Grrrr

I tried to make a backup with Titanium from a Tab 10.1, model GT-P5210, but don't work
I tried to find the two APK on Samsung Store, Internet... but nothing...

On a french forum, users tells me to mount the original stock ROM with an utilitary, and make a copy of the two APK, but actually, I don't find some APK called "Gallery.apk" or "MyFiles.apk" in "/app" tree.

So I make a try here :D
Somebody could make a Titanium backup with "Gallery" and "My Files" and send it to me ? Or a copy of the two missing APK...
Thanks :)