I mean yea... If you paint it like THIS, ANYTHING she does makes sense to her character. She could order Pineapple on her pizza, take a bit and spit it out because she hates Pineapple on Pizza. It'd make sense! She could Wear a MAGA hat to the polls as she's voting for Biden. She could do any amount of contradictions and according to how you describe her, it'd make sense.
If she's a schizo, then everything makes sense 100%.
She's a, lets say "free spirit" before the game starts. Becomes completely faithful on a dime after she meets MC. Has 1 drink, becomes a "free spirit" Again. Stops for a few weeks to be faithful to MC ...again. Has 1 drink, goes back to being a "free spirit". She could have had sex with Tyrone when she was single but waited until she got into a relationship to do so. Consistently inconsistent. BUT if you paint her as a character that just does anything they what, changing her mind on a whim you can excuse any of those inconsistencies as "just Ariana being Ariana!".
It also gives the Dev a "Get out of jail free card" to Do anything he wants with the character free of any critique from supporters. Any in game decision she makes that seems odd will be seen as "Just Ari being Ari!" you know how she is! She can change on a dime, that liberal, horny, emotional girl!