my daughter is only 2, so i am not at that stage yet, but my son is 4, and i have taken him in with me quite a few times. he stands with his back to me and faces the door. usually i have both kids with me, so i go into the handicapped/diaper changing stall, and then theres a little more space.
“That works if the adult needs the restroom, not if the child needs the restroom.”
“If the child needs the restroom the solution is even easier. You ask a frum person of the child’s gender to take him into the restroom, while you wait right outside the door the whole time.”
is that really your solution- send your child off with a stranger? if my son needed to use the bathroom and i was alone, i would take him into the womens bathroom with me. i dont think i would get any stares- i have actually seen quite a few “big kids” in the womens rooms. if i got any looks or comments, i would just explain that i am alone with my children. i wouldnt take a 15 year old boy in, but maybe a 9-10 year old. it would depend on the child and the circumstances.