Looking on the internet deeply has found these results:

"right of becoming a mother" is the most popular phrase on the web.

"right of being a mother" 1134,000,000 results on the web	"right of becoming a mother" 1157,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
a mother. Apparently your wife has grown tired of being a mother again. I gave up every moment of being a mother to my own child, based on your word that you would raise her to be Francis's wife. a mother. It means, Tara, if I were capable of being a mother, I never would've agreed to help you. I'm asking you about your personal experience of being I'm asking you about your personal experience of being The woman is not capable of being a mother.	In the act of becoming a black hole. The promise of becoming a superior race, of becoming fully artificial, was compelling. Mom dreamed of becoming a reasearcher in electrical engineering. But you should know, I have no plans of becoming a mother. Cec has always dreamed of becoming a farmer. This is where I first dreamed of becoming a baseball player. Unless we are seen to defend the charters and treaties which we have designed ourselves, such as the Charter of Fundamental Rights of the European Union and legislation on human rights, then we run the risk of becoming a laughing stock within the international community. I dreamt of becoming a successful businesswoman.

"right of being a mother"

1134,000,000 results on the web

"right of becoming a mother"

1157,000,000 results on the web

More popular!

a mother.
Apparently your wife has grown tired of being a mother again.
I gave up every moment of being a mother to my own child, based on your word that you would raise her to be Francis's wife.
a mother.
It means, Tara, if I were capable of being a mother, I never would've agreed to help you.
I'm asking you about your personal experience of being
I'm asking you about your personal experience of being
The woman is not capable of being a mother.

In the act of becoming a black hole.
The promise of becoming a superior race, of becoming fully artificial, was compelling.
Mom dreamed of becoming a reasearcher in electrical engineering.
But you should know, I have no plans of becoming a mother.
Cec has always dreamed of becoming a farmer.
This is where I first dreamed of becoming a baseball player.
Unless we are seen to defend the charters and treaties which we have designed ourselves, such as the Charter of Fundamental Rights of the European Union and legislation on human rights, then we run the risk of becoming a laughing stock within the international community.
I dreamt of becoming a successful businesswoman.