However, she said she "fully takes responsibility" for her actions, and said she had not hidden either of her convictions when she applied for a new job in December 2012.
Explaining her personal situation at the time of her offending, she said: "At this time I believed I started to exhibit signs of post traumatic stress as I could not sleep or eat properly."
She attended a psychologist, and had quit her job to stay at home with her children, she said.
The tribunal said it gave "little weight" to her explanatory letter, but said it did not think she should be de-registered for her offence.
"We received no evidence indicating the respondent presents a threat to the public or to school-age children," it said in its decision.
However, if she re-offended again it would be unlikely she could remain as a registered teacher, it said.