You did well to control your diabetes without meds for 12 years, so something must have changed now.
What was your last HbA1c that has triggered the need for meds, and what sort of HbA1c levels did you have before?
Stress is a major factor in raised blood sugar levels, but more so is diet. Maybe you unconsciously ate more "naughty" foods during your daughter's treatment. We are all prone to comfort eating at times like that. You can't do anything about the stress, but you can perhaps have a good look at what you are eating. Perhaps you could keep a food diary for at least a month, writing down exactly what you eat and drink and maybe you can spot something. If you tell us what you typically eat in a day we may also spot something to help you.