Frank after being kicked out of the hospital where his Lucy was, despite his multiple attempts to return had finally conceded defeat. Lucy didn't need him right now. He had to let her go . To be human for a while. Instead he had made his way to somewhere safe.
Serenity
The young girl, the one Like him the seer. She would be a safe space. He could hug her and cry and be a creature that was worried.
A day and a half later and a few cuts and bruises, all of which hurt terribly Frank arrived at Hogwarts. He got more cuts and bruises as he climbed the tower where he knew the girl would be and once he got there tears fell. He was hurting, physically and emotionally. His fingers and pads were cut, his fur was matted. All in all the trip had made Frank a little worse for wear.