Fix the grammar mistakes: My wife's mother will be sixty years old this month so these presents is for her.
My mother's mother will be sixty years old so that she can give her presents.

This is a very common mistake in English. It is not uncommon for a person to make a mistake when they are speaking English.

• I think that the word "she" is a noun. – user1019271 Aug 27 '14 at 14:37
• @user1019271: I think that the
My mother's mother is sixty years old so this is for her.
- The first time I saw the word "she" in the sentence, I thought it was a contraction of "she is a woman."
- The second time I saw the word "she" in the sentence, I thought it was a contraction of "she is a woman."
- The third time I saw the word "she" in the sentence, I thought it was a contraction of "she is a woman