What were the results of doing the hard reset using the Power + Vol Down buttons?
Can you get the tablet to turn off?
Ok, turn the power off. And leave it off. Then press and hold the VolDn Key. Then press and hold the Power Key. When you see the Android Logo, that's when you you can release both keys. That should bring you into the Recovery options. Let me know if you make it there.
And you're starting the procedure with the tablet off, correct? Pressing and holding VolDn before the Power? Do you see the Android Logo come up?
Ok, try again. But this time do not let go of the buttons until the screen changes off of the logo.
Give me just a minute
Let's try this somewhat different procedure:
1) Power down your tablet.2) Tap the power-on button and volume down button at the same time, then release both3) Tap and hold the power-on and volume down buttons until you see the android alien icon, then release both4) tap the power-on and volume up again at the same time until you see the System recovery menu.
hmmmm ... has the tablet been rooted?
We could try ADB, but she would have had to enable USB Debugging through Developer Options for that to work. Do you thnk she might have enabled that option?
Yeah, most people don't enable it just because it could allow a stolen device to be reused easily even when hard resets fail. But you mentioned that you were able to get into "Safe Mode". What are your options there?
Can you log into her Google account on your PC, then go to play.google.com?
Oh ... this might not work anyway ... do you know which version of Android it's running?
ahhh ... got it. Ok, let me do some more digging ... see if we have any other options. In the meantime, is there a microSD card in the tablet?
Ok, well from the specs it looks like it is JellyBean. But the app that can bypass locks is only available for KitKat.
I've never not been able to get into a Recovery menu though. Between my wife and I we have 7 different Android devices all of the go to the restore menu in pretty much the same way. Sometimes switching the VolDn and VolUp keys at different points is needed, but they all yield at some point. I'll write more and let you check in the morning.
Ok, after about 1 1/2 hours of searching and investigating, I can find no reason why the first method would not have worked for you. My best solution would be to try the two ideas (with and without the key releases) alternating between the VoldDn and VolUp keys at various points until you can get that System Recovery screen. If nothing works, then the only option would be to return it to the site you purchased it from and have them reset it.
If you can get to the Recovery menu at any point, first "Wipe System Cache", then "wipe data/factory reset" and finally reboot.
The screen lock bypass is only available for 5.1, not 4.4 so that's a no go. You won't be charged anything at this point because you have not rated service. I would definitely recommend playing around with the boot up procedure using press and release, and hold while switching out VolDn and VulUp throughout. One of those combinations will allow you to get to the restore configuration. It's just finding the right configuration.
Alternatively, do you see a pin-sized hole where you might be able use a paperclip anywhere? I don't see one on the specs, but they might have left it off the spec sheet.
Ok, good luck.