The 18-year-old striker Glenturan Werry scored after his young friend Kerry Haleyeh scored.
Northern Ireland and Romania both created a chance to find a net in Windows Park when Elly Mason saw an attempt to reach the pitch and forced Mihaila Siulaku to save the goal during the injuries.
The result raised Northern Ireland after a mistake in Bucharest made an equality to Romania.
“I called for more resistance in the third defense,” Okstobi said.
“We knew that Romania would create a chance in their way of playing.
“I said, ‘Defend your life’, and I think we did tonight. A clean page and not failure, that’s a slogan. I give a lot of credit to the defenders and the children were sensitive.
“Haldai for the goal is something we have worked on, so I’m really happy for them who have received a reward for it.