I adopted Guinness from a foster mom...and i know that, had she said he wasn't good with kids, i would have said to myself, then time to look for another cat. Since you are with her, and foster her, i would think the people would trust your word, and look elsewhere...i would. I was searching for a cat that fit my lifestyle, one that was layed back and was good with other cats, and kids, so i am sure the people interested in her, are looking for a similiar situation, and if they hear she might be "skittish" around young children, then you would be doing them a favor by letting them know she isn't the cat for them...so they can continue to find one that is...hope it all works out for you in the long run

Robyn