Force Awakens Flashback Scene and Rey Speculations

In Star Wars: The Force Awakens, there is a particular scene in Maz Kanata's castle in which Rey is called to Luke's lightsaber. Upon touching it, there is a flashback sequence that contains interesting details. 

First, we see what seems to be the same corridor from Cloud City where Vader and Luke face off for the first time. As we depart that scene, you can hear Luke yell "No!" Now, we are left with the Knights of Ren slaughtering, what I believe are Jedi that Luke has been training. Hence the shot of Luke and R2-D2 standing in front of what seems to be a funeral pire. During that sequence you can also hear dialogue from Yoda. Whether that is from the original trilogy or new dialogue from Yoda as a force ghost, I don't know. However, we can clearly hear the voice of Obi-Wan say "Rey," and at the end of the flashback say "these are your first steps." It has been confirmed that Obi-Wan and Yoda are in that scene. Frank Oz recorded the dialogue, and J.J. pulled dialogue from Alec Guiness saying the word "afraid" and edited it so it would say "Rey." It has also been confirmed that Ewan McGregor recorded the "these are your first steps" dialogue. 

That scene alone leads me to believe that Rey was being trained as a child because it sounds like Obi-Wan was communicating with her at a young age.  The references by Kylo Ren of a an "island" and "ocean" are very similar to Luke's current location. Either Rey senses where he is and doesn't know it, or she was trained on that island as a child. 

Now, we see that she was left on Jakku by someone. That someone, however, I don't believe is Luke. The person who has a hold of Rey is clearly the alien who is handing out the portions on Jakku. If Lor San Tekka is so close by, and is a friend of Leia and the Resistance, I have a hard time believing Luke would not leave her with him. 

My theory is that Rey was in the hands of her mother during the early stages of her training. The reason I say this is because of the way she handles a lightsaber. If the new trilogy follows the EU when it comes to Mara Jade, or a Mara Jade like character being Rey's mother, it shows in her fighting style. She often uses that stabbing motion in her fight with Kylo Ren. That detail is very important considering Mara Jade was trained by Palpatine. If she was in charge of training Rey, it shows. If you look at Palpatine's duel with Mace Windu, you see that style a few times. There are also shades of Anakin and Luke's styles of fighting. 

So, I believe Rey's memory was suppressed by Luke to keep her safe from the Knights of Ren, the First Order and Snoke. She was then left on Jakku by an unknown character, or tried to get a ride on that ship that dropped her off on Jakku in order to get to Luke on the island that he now resides, and was instead discovered, and left on the planet. Then, as she was in situations where her abilities had to be utilized, she began to recall some of her training but believes it to be something unexplainable. 

I could be totally wrong, but I think there's something to it. What do you guys think?