The 21-year-old Raina, who held a WTA ranking of 294 going into the tournament, got past her rival 6-1, 3-6, 6-3 to advance to a summit clash with British sixth seed Katy Dunne tomorrow.
Sixth seed Dunne easily overcame her Serbian rival Sofia Shapatava 6-1, 6-2 in the other semi final.
"It's a good feeling to enter the final in the town where I am training now (under coach Hemant Bendrey)," Raina told PTI after her hard-fought victory over Ene.
Raina, who said she is aiming to break into the top 200 or even 150 next year, held 15 break points and converted 9 of those while dropping her own serve on five occasions.
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Raina and 19-year-old big-serving Dunnne, who is ranked 325, have never played each other before in their careers.
"I have played a lot of WTA events this year and have played against a lot of top players which has helped me improve my game though my ranking has not gone up much," said Raina.
"I now want to make it to the qualifiers of the French Open (in May 2015), though I would not be able to do it at the Australian Open (in January)," she added.