Sergeant Lawrence said the victim had moved into the house where the damage took place with her 17-year-old son and a 21 year-old nephew and they were all away between December 26 and 31 staying with family.
Thomson, who had previously appeared before the court, said she was glad she did it at the time, but now regretted doing what she did.
The drawers, television, and DVD/home theatre system belonging to the victim were irreparable. Reparation of $2800 was sought.
Defence lawyer Virginia Pearson said that she believed the reparation total was high and seemed to be the financial cost it would take to replace the items as new.
Judge Tuohy convicted Thomson of wilful damage and remanded her on bail until April 18. He directed that a reparation report be carried out and that a pre-sentence report be compiled on Thomson.