With the Most recent episode there is a strong likelihood that there is a connection between Lucy and the Dragon Slayers, at the very least one between her mother and the Dragons.
Like one of my favorite Anime characters tends to say "there are no coincidences, there is only fate"
The date of her mother's death and the disappearance of the dragons are probably not a coincidence.
So the questions are
What is the Connection?
and, What will it mean for Lucy's future development?
I have 2 theories of my own but I'm betting plenty of people have other theories and I'd like to hear them.
for my own
Theory 1) Lucy's mom was a dragon. This is probably the most obvious theory. So what does that make Lucy? Could she be a Dragon Slayer herself, or maybe a Half dragon with some unique abilities? Lucy has been shown as having abilities beyond those of other Celestial Summoners, her heritage may be the reason for this
Spoiler Alert! Click to show or hide
I personally don't think she is a Dragon Slayer, because there is some circumstantial evidence to suggest that she is not. Specifically; The Battle for Fairy Tail in the Manga. For whatever reasons the two dragon slayers could not cross the Over 80 barrier. Why? no idea but it probably has something to do with being a Dragon Slayer. Lucy however could cross the barrier, thus Probably not a Dragon slayer
Theory 2) Lucy's mom was a Dragon Summoner. This would require the Dragons to be similar to the Celestial Spirits that Lucy summons, though clearly with a different set of rules as none of them hang around Lucy's mom and they could be out and about all at the same time. Basically I think Lucy's mom acted as an Anchor, allowing the Dragons to exist in the world and when she died they were forced back to where ever they live normally. What does this mean for Lucy? She too could be a Dragon Summoner, we have already seen evidence that she is more powerful than other Celestial Spirit Summoners. It also means that the Key for Natsu, Gajeel and Wendy to meet their dragons again is for Lucy to realize her true power and presumably it'll make her a key player in the battle with Zeref
So there are my two theories, what about the rest of you.
Who do you think Lucy's mom was and what secrets does Lucy's heritage hide?