Other childproofing items that would help make this stove safe include an appliance strap to keep the oven locked and covers for the stove dials so that she can't turn the gas on by herself.
An appliance strap to 'lock' the stove the wall would also be a good idea, just in case she does open the oven and step onto the oven door, which could otherwise cause the whole stove to tip over on top of her.
Using a 'layers of protection' strategy, in addition to the above safety tips, you might also have safety gates keeping the kitchen off-limits, so that she couls safety walk around and explore the rest of the house.

