I wouldn't sweat it, she sounds like she has tried to be honest and hasn't had a dig at you or your family.
If she is prioritising her career then that is her choice and it is just as valid as another woman prioritising having a family. Neither makes you more or less busy than the other, but if someone said to you 'I've got 4 kids so its hard to catch up' then it probably would have made more sense to you.
And the fact that she has flagged different interests shows that you are really just at different points in your life. She might prefer to catch up in the evenings at trendy wine bars or go away on spa weekends which is pretty hard to do with friends who have kids.