How to unlink an iPhone 5c from the previous owners iTunes account?

I bought a 5c from kijiji three months ago. I loved the phone and it worked great while it was still in the sellers hand. I brought it home and did a factory reset and found out that it was linked to the ladies iTunes account.

Here's the best part. She has vanished. I have not been able to track her down. Not thru Kijiji nor at the Gmail address from the add.

Is there a way to unlink a phone that is linked to an iTunes account?
And after three months with this phone it is still not on the black list. So I don't think she was meaning to rip me off.

Will my FedEx package come tomorrow?

I just ordered an iPhone 5 and selected standard over night shipping.
I ordered on Friday at 4pm and it was shipped out that same night from Memphis.
The package traveled from Memphis, TN to Cleveland, OH throughout the night and was in Cleveland by 3am on Saturday. I thought I would receive it Saturday night since I only live about an hour and a half from the FedEx place. But it never came, so will it come Sunday?

Why did he delete me an then add me again?

So this guy I've liked in the year above I've never spoken to I added him on snapchat and then he accepted and we would send snaps as a whole so to all our friends and then for three weeks I stopped getting his snaps but his snap points were increasing so I wondered why and never did anything then suddenly two mornings ago I had a notification on my iPhone saying his name "added you back" and then sent a snap saying reply with anything for likes an i don't know if it was personal but I didn't - and now for these two days his snap points have bee increasing and he's opened all my snaps but he hasn't sent me any? We went primary as well as high school I'm not sure if he knows me but I never show my face on scapchat and I liked him in primary as well… During the time I was deleted on his friends list he opened all my snaps even tho I wasn't sent any by him. What should I do?

How long should an iPhone 6 battery life last?

I got my iPhone 6 about a week and 3 day ago, and I've noticed a few bugs, and it went from 100% to 20% in just three hours? Is this only for my phone or the 6 in general? I turned off background usage, I put my brightness down low, etc, and I've noticed my friends that has a 6 didn't need to do all these things but theirs last longer than Mines?

My Girlfriend is cheating? Should I leave her? - 2

We went on a mountain trip with some friends, at one point when we where walking this guy said he had forgotten something, and soon after she said she had as well, I got suspicious and put my iPhone in a bag she was Carryng while on record, when they came back 40 min later I found out they hadn't gone farer than 3 minutes away, and that she was cheating, and i could tell not for th first time, something that also bothered me is that T one point that morning before I knew, he made a joke at me ( baught a watch afte he knew i had it, and told me to stop wearing his watch) and she laughed really loudly, when we got home that night I broke up with her but I didn't tell her about the cheating, i told her that i thougt she didn't care about me anymore, she started cryeng and told me she loved me, I told her that I was also planning on moving back to Australia anyway, and she said she would move with me, so I'm confused, because if she's ready to leave all her friends, family and Job to come with me why would she cheat? And she told me she loves me?

Are iphone chargers a good thing to buy and sell for more?

Are iphone chargers a good thing to buy and sell for more? - 1

Added (1). I'm currently thinking of trying to buy things and sell them on for more. Was thinking iphone charges would be a good item not sure though opinions would be greatly appreciated

Can't send pictures to non iPhone users?

I have the iPhone 5c and whenever I try to send a picture to a non iPhone user it doesn't let me? It just shows the picture button thing as gray so it basically doesn't even work if I tap it.