Looking on the internet deeply has found these results:

you have been a wonderful mother is the most popular phrase on the web.

and your son is proof of it 10 results on the web	you have been a wonderful mother 1159 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	You have been a wonderful mother and a wonderful person; you have triumphed over many hardships and setbacks. I remember mum those tough days when�... It sounds like you have been a wonderful mother to them. I definitely think you should have at the very least been acknowledged! I am completely over the ME�... Apr 24, 2015 ... Carolyn � you have been a wonderful mother to Wayne & Corey and really kind to me, JJ & Jasmine � we love you very much and will continue�... I know you will be a wonderful Mother for David and Miranda because you have been a wonderful Mother to all of us including Talisha. I know that Talisha is�...

and your son is proof of it

10 results on the web

you have been a wonderful mother

1159 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

You have been a wonderful mother and a wonderful person; you have triumphed over many hardships and setbacks. I remember mum those tough days when�...
It sounds like you have been a wonderful mother to them. I definitely think you should have at the very least been acknowledged! I am completely over the ME�...
Apr 24, 2015 ... Carolyn � you have been a wonderful mother to Wayne & Corey and really kind to me, JJ & Jasmine � we love you very much and will continue�...
I know you will be a wonderful Mother for David and Miranda because you have been a wonderful Mother to all of us including Talisha. I know that Talisha is�...