Not sure because she was laying on different eggs? They have been hatching about 24 hours apart up till now. The two others are doing great! I will try and figure out how to post a new post lol
We try to keep an eye on this thread for people that need help

It can be up to 24 hours before a chick will externally pip after it internally pips, so seven hours isn't too much cause to worry. But, you can put a small safety hole in if you want - as long as it's done correctly, it won't hurt anything, even if the chick doesn't really need it.