Answer:
I can be found after you remove 6 letters from BSAINXLEATNTEARS
At night I come without being fetched, and by day I am lost without being stolen. What am I?
I have Eighty-eight keys but cannot open a single door.
Long and thin red within with a nail at the end.
The more of this there is the less you see. What is it?
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk