"...like, what, dating six people at once or only going out with people who have blue hair or what?"

Fine she'll just blurt it out. "I don't like boys only girls, and you're pretty, and I won't do anything but you deserve to know."

"Oh. Well, I only like boys, but I don't mind that you think I'm pretty, or anything."

"Okay. People would really freak out in Germany and actually most other countries I think about that. Is why I was nervous to say it."

"I guess you might people who are like 'but don't you want kids' or 'are you sure you've met enough boys to know you don't like any of them' or something? But it's not a huge deal."

"I don't like girls as much either, not like other people seem to. it's just. I don't know. I don't think I want kids ever, I'd be scared to mess it up."

"I'm not gonna get on your case about it."

"Yeah so now you know, and now I'm gonna read for a bit and then try Islandish again, if I can remember stuff after half an hour of not thinking about it it's a good sign."

"Sounds like a plan."

So she borrows a mechanic's manual from Bella's world and tries to figure out how much of her know-how will transfer.

...not much. Bella's world is pretty heavily electronics-based and a lot of things have computers in them. The measurement system and tools are different, some of the materials are futuristic and unfamiliar, the designs are backwards or inside-out where she can figure out what they are at all.

Is it using some of the same basic parts at least? Spark plugs and fuel injection and carburetors and timing belts and sway bars and hydraulics...

She can find things that are probably otherwordly analogues of those things with some effort. Although a lot of them have been rendered obsolete with fancier stuff.

She starts absorbing the new stuff, then. It won't help that much without actual engines and tools and so on to look at and it's not like she can borrow a whole workshop from Bar, but still.

Bar is happy to help guide her to useful materials and answer questions.

She doesn't learn from books as easy as watching a mechanic at work.

Luckily, there are video lessons of people working on similar machines somewhere in the multiverse.

There are even videos straight from Bella's world!

The existence of video recording is new to her but if it works it works!

After about an hour she wants to try Basic Islandish With Bella again...

...She forgot about a third of it, and the rest comes back easily once they get talking.

Bella is patient about the forgetting.

"What do you reading?" Entirely in Islandish.

"- should I correct your grammar or just give you points for being understandable?"

"Yes, please correct my grammar." German.

"It'd be 'what are you reading'. I'm reading the Security handbook, I'm thinking I might get more doors if I have a bar job."

"Oh, that's a good idea! Bar, if I had a compact armored walker with stun electric thing and net cannon or something you think I could work Security? And a few 'mon of my own, because I'm assuming you'll use yours Bella?"

"I would be completely unqualified without them."

Yes, that would suffice, says Bar.