Hi Marina
This may be Ann and Janet in 1901:
Ann Quinn, 11, and also, Janet Quinn, 9 both b. Glasgow. Showing as inmates at the Catholic Orphanage for Girls, 570 Gallowgate, Glasgow (Calton area).
Not sure where you are based, both you may want to search for poor relief applications and records that may have survived relating to the girls/family. They can be invaluable in terms of personal info if you can find any for them.
Monica