Meet her at a nearby park.

"Alright, so if we're going to need to take some time to get to know her, we should start now," Momo suggested.

"Well, it's not like we know where we can meet up with her," Izuku replied.

"Again, Master, you're forgetting my magic. Just wish to know where the cute girl you met is, and we can go there to meet her!" Momo suggested.

"I dunno, isn't that a bit stalkerish?" Izuku asked Momo apprehensively.

"Maybe a little, but stalking is usually done repeatedly. This would just be a one time thing to arrange a single "chance" meeting. Afterwards, you can see if you can get her number, and arrange more meet ups without issue!" Momo asserted. "And I don't think she'd mind meeting up with you, given what already happened between you! It's a rescue romance in the making!"

Izuku blushed at that last comment. At this rate, he was worried that his face would permanently become red with how much blood constantly rushed there. Could it leave internal stains? "Alright, I wish to know where we can find Ochaco in the most convenient manner possible. As in, when will she next be somewhere we can feasibly run into her and where will she be? Showing up at her place would be a bit much after all."

"Good catch," Momo replied, snapping her fingers, and conjuring up the knowledge in her own mind. "Oh, we're in luck! She's in a park that's about a thirty minute walk away, and she intends to be there for a while!"

"Let's go then!" Izuku said, getting up, and leaving his mom a note, saying he was going to a park to think and spend time with Momo. She was over at Mitsuki's place, having made herself scarce to give Izuku space while he thought for sure he had failed the exam, though thanks to Momo, now he was only worried about it.

Once they were dressed in fresh park going attire, they headed out together, hoping things went well.