Yep as everyone has said, 7 mos is not too old. A lot of people like the older pups. Kudos to you for looking out for your pups best interest as much as it may hurt. I'm sorry about your situation, sometimes life just doesn't always work out like we planned, does it.
I'm sure if you post some pics and some more info, a YTer would snatch her up. Then you could see her grow through YT!
BUT as said please be careful in your consideration of who if that ends up being your decision. Do your background work on the person, it worth it for your pup
Best of luck, I look forward to see you posting again