Should I correct this email?

[discantus]

My friend emailed me the other day to tell me that she'd just joined "a small orchester!!"

My fingers are itching to reply with a correction, would it cause offence?

[Jazzicatz]

I wouldn't - I would congratulate her on her news.

[MrsWeasley]

Don't correct it as such just reply to her using the correction in your reply.