Ok I have this morning fixed both these issues for the next release..
the +1 hour will now take you to the next full hour, and then skip forward an hour.. ( there is no value in jumping forward 15mins are a time as they are the same within that hour, but if you jump forward a whole hour you can miss much of that hour and I get that... if you wanted something different please explain why)
Also mother interaction was design to skip the hour so you cant get 3 or 4 x money from her in the same day.. I have updated it now, so it checks if you have had money already and if so then it gives a different response and now only jumps forward the 15 mins either way...
this should give you a little extra time to make it to college on time!