The girls were being taken to Sonauli bus station when the SSB, acting on a tip off, reached the spot and rescued them and arrested the woman along with them, said P Chakma, Assistant Commandant, SSB.
During interrogation, the arrested woman revealed that she was supposed to hand over the girls to her accomplice in Mumbai after taking Rs 10,000 for each.
The girls have been sent back to Nepal, Chakma said.