Alyson Watt, 52, who worked for Barnardo’s Scotland, died at the scene in Penilee Road, Paisley at around 4.55pm on Friday.
The 16-year-old boy taken to the Queen Elizabeth University Hospital in Glasgow where medical staff describe his condition as critical.
A 54-year-old man has been arrested in connection with the incident.
Barnardo’s Scotland staff paid tribute to their colleague.
Martin Crewe, Director of Barnardo’s Scotland, said: “We are shocked and deeply saddened to learn of the death of our colleague Alyson Watt, who was a much-valued and long-standing member of staff in Paisley.
“Our thoughts are with all those affected by this tragedy and we are continuing to support police with their enquiries.”