............. then:
1) on the convex side of the break, sand the break flat so that when you pull the trim tab straight again you have about 8cm of chamfer.
2) Do the same or similar on the other side, if you can flex it so the other side is the convex side.
3) Splint it straight with wood/tape/clamps/vice/heavy things/etc. Take time over this.
4) put wetted out carbon (UD if available) cloth in the hollow you have just sanded out,.
5) Do the same on the other side.
How to repair the hinge I have no idea. Even exactly what happened to the trim tab isn't plain.
Be careful to keep resin out of the hinge.