My mother lives my brother's life

[HabitualDelirium]

So recently, my mother has been very into getting my brother through his last couple of year's in high school. She is so adamant about helping him, that she does ALL his homework with him (Sometimes, she even does it FOR him if he has a test to study for...)

 

It's been bothering me, because I think it is majorly affecting my brother's ability to grow up and develop any sense of independence. Furthermore, I do not see what my mother would do with her life once my brother must either move out and go to college. She keeps saying stuff like how she hopes he'll go to a local college so that she can keep doing his homework with him, and basically, she wants to go through school with him forever. My brother doesn't even bother fighting it because he loves that fact that he's getting mommy to do his homework. She drives to school to study with him during lunch breaks, and still holds conferences with his teachers to go over tests even thought he is a junior in high school and SHOULD be responsible for his own academic issues. Whenever she's not working, she sits in the kitchen doing HIS homework assignments.

 

I feel like my brother will never build a relationship with another girl because my mother is basically THE dominating female in his life. My mother does not sleep in the same bed with my father, and I feel she's using my brother as a partner she can't find in my dad (he refuses to be manipulated and do things to her every whim unlike my brother). Furthermore, my brother has never even thought of or attempted to having a relationship with a another girl. I can imagine his relationship life being controlled by my mother as an extension of her influence over his academic life. Whether this is a fair link, I do not know.

 

This never happened to me as I was pretty independent, but I'm afraid of how detrimental this may be to both of them. Any ideas or opinions on the situation? What should be done about it? Is it even that much of a problem?