you dont need her. You can use the longshot on the little sign thing above the bridge in gurdo vallie
wrong you do need her you can't get ot lake hylia as an adult without her cause the shortcut is frozen over
no, you can get to lake hylia without epona. there is a ladder on the side of the stone wall. climb that, and you can get to lake hylia.
yea on the other side of the fences