Hi where did you get your baby from
as far as windows go,if you have a indoor cat,you dont have open windows! you need to make sure the kids understand why it is not safe for your cat to roam outside,cats are curious and just because they have to stay in doesnt nessasarily mean they will want to.
you could build a run so in the summer you can put her out safely,she can even sleep out if its warm so you can have windows and doors open,but PLEASE DO NOT LET HER ROAM,IT WILL END IN HEARTACHE