Not so sure if it's a milestone, but a first tooth broke through the gum (only noticed today, could've happened yesterday or day before)
And, she has FINALLY started rolling consistently front to back, hooray! She has still never rolled back to front though.
Also in the last month or so she has;
Learnt to turn over pages in a book,
She will look when you point to something,
She has developed her pincer grip,
She will reach out to be picked up (I love this!)