You may remember that the 18-year-old netted twice on her one first-team appearance for United, last season's 6-0 win over Wolves in the FA Cup, and is now making an impression for her country.
Griffiths scored Cymru's equaliser in their eventual 1-2 friendly defeat to Australia, while picking up her second cap on what was her first start for the nation.
To top an already proud day for homegrown United talent, Academy defender Scarlett Hill was introduced off the bench for her senior debut, while graduate Safia Middleton-Patel played her sixth game in the Wales goal.
What a goal!