The Nigerian marksman, a deadline-day signing, was handed a baptism of fire last Sunday when pitched straight into the starting XI for the Edinburgh derby and struggled to make an impact during a breathless, frantic 2-2 draw in the Scottish Cup fifth round.
However, Dauda illustrated his potential three days later, scoring a double in Dingwall to secure a 3-0 win for Hearts after coming on as a second-half substitute.
Alexander said: “The midweek goals will do Abiola’s confidence the world of good – and he is looking very good in training so I think he can help kick us on for the rest of the season.”
Hearts have also been buoyed by the return of Jamie Walker, and Alexander added: “He is getting a few more games and getting back to full fitness and is looking good, so he is like a new signing for us.”
Hearts are sweating over the fitness of Prince Buaben ahead of the derby clash, but Igor Rossi and Blazej Augustyn will return.