one berth is available in ladies quota. Book all the 3 tickets under this quota, You will get one comfirm berth and two in waitlist. Adjust the children with her.
Lower berth quota(SS quota) is allotted only to the single lady passenger of age 45 and above travelling alone or senior citizen male(age 60 years and above) or female (age 58 years and above) passenger travelling alone.