Lucy in Undertale AU's

What if during the seven years on Tenrou, Lucy was sent to a different dimension, the undertale multiverse to be exact, except she is an 8-year-old, she still has her magic. With Ink trying to keep her a secret from Error and Cross, what happens when the other AU's discover her, will they help Ink to keep Lucy a secret or will they rat him out to Error or Cross?. And when the rest of Fairy Tail wakes up, will Lucy go back with them, or will she stay with the undertale multiverse. What if Lucy had a far more horrifying past then Fairy Tail or anyone except her spirits and Mavis knew about, what happens when Frisk and Chara recognise the signs. Read to find out. I don't own anything but the plot and few of my own OC's