How do you ask to babysit or to be a mothers helper?

You can go to her and simply say. i was wondering if you needed work done around the house i can watch the kids for you at your house while your getting some work done.

then she might say no no that's ok. don't feel bad just say, no really i want to.

don't worry she will give in. i is better to ask the mom not the dad but it dosent really madder.