20, 22 for Thisbe and Vetra please? :)
20) What does their home look like? Their room?
On the Tempest they share Thisbe’s quarters and it’s a mess. There’s so little downtime that isn’t spent sleeping or eating in the early days that the room is in a constant state of disarray. It irritates Thisbe the least, but eventually one of them will have had enough and spend a few hours of their wake cycle cleaning up. It’s not dirty so much as messy piles everywhere. At least the piles have themes, though: clothes, armor, weapons, data pads, weird artifacts...
Their apartment is pretty spartan, considering they aren’t there very often. There are trophies and artifacts scattered around. Everything else is standard issue furniture and layout. The place is spotless and tidy thanks to the cleaning staff. It kind of looks more like the display model than a real apartment.
Having said that, the living arrangements on the Nexus is a little… complicated. Thisbe has her own apartment, and Vetra has hers with Sid. It's initially a struggle getting Vetra to let Sid be on her own and move (more or less) into Thisbe’s apartment. Technically the apartment is in Vetra’s name, but she feels guilty not being there for her sister, especially if they’ve been off-world for weeks or months at a time.
22) Does their work ever interfere with the relationship?
Yes. While they’re both people who plan and try to be as prepared as possible (and they enjoy that about the other), they can butt heads over how a thing should be done. They’re both stubborn and when their goals are aligned it’s smooth sailing - but when they’re at odds it can get intense and stalemate until Thisbe pulls rank which is not how she’d like to solve a conflict, ideally.
The Pathfinder’s never really off-duty, either - even if they happen to be in the middle of the desert in a giant underground cave, enjoying a mud bath and hot springs on their own - emergencies are emergencies. Nothing’s stopping that call coming through her omni-tool. It adds strain but they learn to talk about it, and they learn to savor the free time they do have together, getting to know each other on a more personal level and away from work while they can.