I think that any time is acceptable. As long as it's before the wedding day, but heck, if it gotta be at the alter, it's at the alter. The reason I say this is because it's never to late to catch an almost-mistake. Lost money is much better than a lost life. You can make the money back (outta his @$$), but you can't get your life back, you can only do it once.
Tell her to make it fun. Whoop his @$$ in the dress. HE is in the dress. Make him eat the flowers.
Tell her to still go get her pictures taken. Shoot, if all of your line was going to be at the wedding, yall can take some pictures together. Now that would be nice!
OR, she can take humiliating pictures of him, black and blue in a wedding dress. That's priceless, lmao.
And yall could still eat. If she's already paid the caterer, just have a Thank God I Didn't Make That Mistake Party. Food's already paid for, no since in throwing it away. I'm assuming she had a DJ, too. Yep, if the money was already spent, have a party on Saturday instead. Hmph, one monkey don't stop no show. This way she can get her party on, and cry with her sorors when it's all over and said and done. But if she's worried about saving face, go on 'head and have the party.
But it's never too late. Call that mess off. And tell the Soror that she is in our prayers. We pray she don't end up in jail. Hmph, ten years is a long time. I'm kinda ticked for her.
TELL HER TO MAKE SURE SHE KEEPS HER RING!!! ALL THE MONEY SHE DONE SPENT I'M SURE IS WORTH MORE. HE OWES HER AT LEAST THAT. Simple punk. No, I'm not above name calling.