Fwelin 
"[@Red-Supernova":](/images/2466162#comment_9317330
)
She literally said that she was happy to see Rainbow.
[bq]
> Lightning Dust: Your "friend" got me kicked out of the Wonderbolts.
> Scootaloo: Oh. That's, uh, less cool.
> Lightning Dust: And it was the best thing that ever happened to me! Great to see you, wingpony! I heard you're a full-fledged Bolt now.[/bq]
Then, at the end, Lightning Dust good-naturedly declared them to be "rivals for life" as she was pulled into the sky.
It's pretty clear Lightning Dust doesn't hold any grudges against Rainbow by this episode, and she even admitted that her actions were wrong in Wonderbolts Academy.
[bq]
> Lightning Dust: Mad at me? Look, was it wrong of me to endanger the lives of your friends? Yeah.[/bq]
On Rainbow's side, while she was initially a bit put off by Lightning, after LD admitted she was wrong she let it go, and they were also laughing with each other when they were reminiscing about the academy, and Rainbow even complimented her on the success of her new show.
> Lightning Dust: Only because when I went, I cranked up the dizziness factor.
> Rainbow Dash and Lightning Dust: [laugh]
> Rainbow Dash: Well, I'm glad it all worked out. Your show was pretty dynamite.
It was only when Scootaloo got involved that Rainbow started getting protective, which was a temporary problem between them that was solved at the end of the episode via Scootaloo no longer being interested.
There was no grudge from the events of Wonderbolts Academy, she admitted she was wrong for her actions in WA, and Rainbow and Lightning even had moments of light camaraderie. Lightning was basically redeemed off screen.
She literally said that she was happy to see Rainbow.
[bq]
> Lightning Dust: Your "friend" got me kicked out of the Wonderbolts.
> Scootaloo: Oh. That's, uh, less cool.
> Lightning Dust: And it was the best thing that ever happened to me! Great to see you, wingpony! I heard you're a full-fledged Bolt now.
Then, at the end, Lightning Dust good-naturedly declared them to be "rivals for life" as she was pulled into the sky.
It's pretty clear Lightning Dust doesn't hold any grudges against Rainbow by this episode, and she even admitted that her actions were wrong in Wonderbolts Academy.
[bq]
> Lightning Dust: Mad at me? Look, was it wrong of me to endanger the lives of your friends? Yeah.
On Rainbow's side, while she was initially a bit put off by Lightning, after LD admitted she was wrong she let it go, and they were also laughing with each other when they were reminiscing about the academy, and Rainbow even complimented her on the success of her new show.
> Lightning Dust: Only because when I went, I cranked up the dizziness factor.
> Rainbow Dash and Lightning Dust: [laugh]
> Rainbow Dash: Well, I'm glad it all worked out. Your show was pretty dynamite.
It was only when Scootaloo got involved that Rainbow started getting protective, which was a temporary problem between them that was solved at the end of the episode via Scootaloo no longer being interested.
There was no grudge from the events of Wonderbolts Academy, she admitted she was wrong for her actions in WA, and Rainbow and Lightning even had moments of light camaraderie. Lightning was basically redeemed off screen.