Having claimed the name of Commander Shepard but having also realized she didn't have the resources to back it up, she's kept her head down and tried not to draw attention to herself, particularly after a real Shepard arrived in April. In an effort to better pass as Shepard, she took etiquette classes on Emiri and spent some of the Collectives trying various foods Shepard might have had exposure to. (One notable preference difference is that she doesn't like alcoholic drinks, partially because she doesn't like the taste and partially because she doesn't want to lose her faculties in case she lets her true identity slip.) Rather than actively insulting those around her and throwing them under the bus, she's come to be standoffish and antisocial. She makes the occasional exception for humans she sees as potentially useful allies in combat or humans she sees as holding similarly xenophobic and/or "no bullshit" attitudes to her own.

One major downside of pretending to be Shepard is dealing with her squad. She's claimed amnesia from her biotic amp getting jostled while coming through Caducus Primary's Ingress (which did happen, but it only hurt until it was realigned, rather than affecting her memory), and tries to avoid spending time with the squad in case they pick up on anything that amnesia and an alternate universe can't excuse. She also takes advantage of the Spacer Shepard's tendency to change the subject if she brings up Mindoir. Though she did help rescue Tali from slavers out of obligation, she's particularly distant with Shepard's alien squad members. Nihlus, her only canonmate who knows she's the clone, is the exception, as he hasn't (so far) blown her cover and she doesn't want to provoke him into doing so.

The main drawback, of course, is that it's exhausting. She gets tired of pretending she's a good person (hence her enjoyment of terrible people, as it means she can let her slightly more personable front slip), and she's constantly terrified of being found out, of having the people onboard the Moira who know about her reveal it to the rest of the ship. At the minimum, she's scared of losing the respect and trust of the crew; she doesn't want to be treated as a danger when she's not trying to be dangerous. At the worst, she assumes Shepard and/or the squad will try to kill her, seeing as they did it back on the Normandy; she's written off her Shepard's offer to save her as a baffling anomaly which would not be offered again after over a year of deception. Though Resurge means she's pretty blase about death (so long as it's from an outside source - she went along with fixing her rapid aging because she didn't want something about the way she'd been built to kill her), that doesn't mean she wants to die again. She can't conceive of a future where she's not 'Commander Shepard', despite Miles Vorkosigan pointing out to her that she is her own person.

In the Citadel Archives, Shepard pointed out to her that she's killed more humans than she's saved, and it's something she remembered on Caducus Primary, where she made an effort to help rescue the human-passing Caducans. Though they didn't save the entire planet's inhabitants, saving humans felt good, and not just because it was What Shepard Would Do. This was, after all, what she was raised for, to put Shepard's reputation and resources towards saving humanity instead of aliens. She's kept this in mind ever since - just because she's not in her home universe doesn't mean she can't rescue the humans here.

She's still pretty disgusted with non-humans as a whole, having observed a lot of the callout posts, murder/attempts, and off-Moira opposition were started by them. She had a grudging respect for Meh Yewll, as the doctor helped her with both the medical side of her being a clone and not revealing it, and willingly started a plant database with her because she felt she owed her (and also because it would go on to help the humans of the ship, with any help to the aliens being unfortunate collateral damage), but that's about the warmest she's gotten towards any alien.

Despite all the drama and aliens, she loves being on the Moira. In her six months training to replace Shepard, she didn't get to see very much of the galaxy, and she gets to do that here, seeing and doing and eating new things on every planet or space station. She gets to make her own choices rather than be subject to her mentor's orders and scheduling. In her role as a MID technician, she gets to be useful and help humans with her own talents. She has the excuse of alternate universes for her being a very different Shepard to the real one (and it's true to a point - her Shepard was in fact a Ruthless Colonist Sentinel, unlike the Spacer War Hero Vanguard here). When the Moira eventually reaches her destination, she has no desire to go to her home universe, being dead there and seeing no way to coexist with the real Shepard even if she returns alive.