I believe people can make time for whatever it is that's important to them. I often wonder how so many people on this site can spend so much time posting.
When friends ask me how I have time to "get it all done" with four young children - I ask them "How do you have time to get your nails done?" "How do you have time for tennis lessons?"
We all set priorities and if learning and studying to become a rabbi was important to a particular woman - even one with seven children - she would be able to find time to do it!