Hi Chrissie. Baby tortoises are independant from hatching, the mother has nothing to do with them after laying the eggs. If you live in a rural area there should be plenty of food for them at this time of the year, though I imagine it's already drying up (we uaually go out in May when everything is at full blossom ready to go over). They are made for your climate so if you have fields or woods or scrub around it will make it's own way in the world. However, if you go all maternal and can't bear to send it on it's way, I suppose you could keep it as a pet, don't know what your rules are on that. They eat mostly dark green vegetation, but will eat fruit and veg too.
Let us know how you get on.