You can stack this ball, no problem.
Don't even worry about the top weight. In fact, this may be good for her. You can shift the grip farther off the label without the use of an extra hole. No X hole means more back end (usually).
Stack it with the pin up, towards the ring finger/ next to the ring finger, this should be in the flare safe zone. If she has tiny hands and you think she will have too much finger weight, drill the fingers deep. Probably drill the fingers deep anyway.
If she needs an X hole, drill it over and down from her grip center. This should also help the ball stay off the thumb hole.
Don't worry buddy, she will be fine!
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