After recovering from a bout of Covid, the England manager will return for Wednesday's quarter-finals against Spain.
Arjan Veurink took charge of the Northern Ireland game.
She said before the Spain match that she was feeling good.
The Dutch woman would return to all elements of her role after testing negative.
Confirmation ofWiegman's return to the England bench will be a significant boost just hours before the start of the game.
She wore a mask while recovering from the virus and communicated with staff virtually.
The squad has prepared for the possibility of Covid cases during the Euros.
On Tuesday morning, the goalkeeper and the defender tested positive for a drug.
There's more to come.