At around mid April her front 2 bottom teeth broke through. Then in June the top front 2 came out. Now, mid July here comes another set of two. They're called lateral incisors and are right next to the top front ones.
I remember when I met the boys of a friend of mine, his eldest son mentioned a wiggly tooth. My baby wasn't even 2 mo yet and I remember thinking, I'll blink and she'll have a full set and one of them will be wiggly as well. Well, the path to the full set is already being tread.