All that needs to happen is the silly light bulb in the basement burn out. Geesh. Wasn't like they were going to be looking at each other forever. 
aaaaaahhh,....yes, but wait!!
remember? the TARDIS's security system returned it to the doctor when sally tried to activate it, leaving her, and her friend standing in the middle of the angels.
the problem here? whelp.....since the tardis went, and the doctor was able to come back to now, and sally gave him the script, all of that episode never really happened. hence the weeping angel behind the store.
so in rescuing the doctor, and trapping the angels, in reality, she also freed the angels.
eehhggg....now my head hurts.
