How can the state prove reasonable doubt that the door was broken by the defendant when pictures were taken 5 days later?

I'm facing burglary with assault or battery charges. The victim of battery has dropped all other charges. The mother of victim is stating that the defendent broke down the door, went upstairs and dragged the victim out of the house but she is the only witness to the case. Should the defendant take this to trial or just by one witness? How can this case be substantiated and how also could charges still be burglary with assault if they can't prove he broke the door?