The home side won an early free-kick in a dangerous position when Hinton caught busy striker Whitman with a high boot. Ian Joy who was booked for dissent early in the second half
Owen curled his effort over the wall but saw it clip the top of the bar and go over for a goalkick with Nixon beaten.
Harriers' Joy was cautioned for dissent five minutes into the second half.
Dioncaster were bossing play at this point but Richardson had to pull off a good save to deny Shilton on 57 minutes.
The winger was released by the fast-breaking Foster but his shot from just inside the area was well blocked.
Doncaster midfielder Owen was immediately booked, seemingly for a foul earlier in the play.
Harriers reverted to a 4-3-3 formation on the hour as Molby made two substitutions.
Blake replaced Shilton and Larkin came on for Bird.
Nixon had to be quick off his line moments later to block the oncoming Watson and Doncaster won a corner.
But they could not take advantage of the flag-kick and Harriers went down the other end with Foster racing on to Bennett's long pass before firing a low shot too close to Richardson.
Doncaster brought on £100,000 signing Jackson for Whitman on 66 minutes.
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