My child's caregiver is going to break the contract.

She had already mentioned it to you but now it's official, since you received her letter of resignation this morning. It's the end of the contract you've had for 2 years.
You heart aches, because you loved your child's caregiver. Also you know you'll have to explain it to your little one. Meanwhile, you know you're going to have some work in ending the contract.

For what reasons might a caregiver resign?

There are many and not different from other professions. Here are a few at random:

• She's moving,
• She's changing careers,
• She's retiring,
• She found a better-paying contract.

Standard procedure for resignations:

• The letter of resignation: the caregiver is authorized to send it by registered mail. She can also give it to you in person, in this case,  she shall establish in duplicate. She will keep one of them on which you have signed and dated.
  
  
• The length of notice: 
  After the trial period, the amount of notice is:
• 14 days is the standard minimum
• Other agreements may have been included in your contract, including up to 1 or 2 months notice.
  The notice period is counted from the day of receipt of the letter of resignation.