Моя дочка сама засыпает в кроватке.

my

Breakdown of Моя дочка сама засыпает в кроватке.

• в: in
• засыпать: to fall asleep
• дочка: the daughter

Questions & Answers about Моя дочка сама засыпает в кроватке.

Why is it моя, not мой?

Because дочка is a feminine noun, and the possessive my has to agree with it in gender.

• masculine: мой
• feminine: моя
• neuter: моё
• plural: мои

So:

• мой сын = my son
• моя дочка = my daughter

In this sentence, моя is nominative feminine singular to match дочка.

What is the difference between дочка and дочь?

Дочь is the basic word for daughter.

Дочка is a very common diminutive / affectionate form. It often sounds warmer, more personal, or more natural in everyday family speech.

So:

• дочь = daughter
• дочка = daughter / little daughter / dear daughter

It does not always mean the daughter is very young; it often just adds affection.

Why is сама used here? What exactly does it mean?