Deathly Hallows

I finished Harry Potter and the Deathly Hallows today, a bit after all the initial brouhaha. I took my time, savoring this last book of the series.

It has been quite a journey, very exciting with many questions answered. And yet I have a few more.

Did Harry ever tell the Dursleys that it was safe to come out of hiding, or did he just let them continue to suffer in their safehouse(s)? (If he didn't, who could blame him.)

Did Aunt Petunia ever apply to any other wizarding schools after being rejected by Hogwarts? (Was she jealous of the attention that Severus Snape gave to her sister, Lily?) Is financial aid available for financially challenged wizards or do they simply look under the sofa cushions for misplaced galleons?

Did they use union wizards to repair all the damage at Hogwarts?

JK, enquiring minds want to know.