I beat the game, used her a fair amount in my party. She got no scene at the end, it like went through what was going on with everyone else, nothing for her. Was pretty disappointed.
That said, she is not weak. I played her as a Druid but you could respec her to anything you want. No character can be weak or strong, as there is nothing innate about them thats specific. They are whatever class you make them and whatever gear you put on them.
Replay the ending scene, what charcters get a scene is completely random. I had her and minsc the first time, but after a few goes though I saw her and Astaron and her and Laz having convos too. Also the reactions change who says it too, she said it first for me.
It's really weird how much of the end content is completely random which characters scene you get instead of just seeing all the scenes, the whole game is like that with content being missed being the game only shows only characters reaction, but for the FINALE scenes, it's weird when it rolls so you don't even see a companion you've spent the whole game with.
If you rewatch the ending enough times, eventually you will get a scene with her in it. multiple different ones if you have enough patience