Is this manipulation or survival tactic?

I know closely a woman who has this whole "tradwife" aesthetic going on, her husband is an outspoken conservative man, I've spoken with him and he isn't very bright. Last time we met up she bragged to me about how she "lost" her expensive necklace on a lake trip, then cried about it to her husband, so he bought her a new one, she has done it before with "losing" things, then berating herself to her husband, calling herself brainless etc. In reality she sold her necklace and gave the money to her mom, same with other "lost" things. She also does this thing with taking cash back after grocery purchases, she's hiding money from her husband and saving it up in cash. She also dresses differently when her husband isn't around, wears bright make up, goes to outings, bars, while leaving her toddler with mom. When husband comes home she changes her tone to more sweet. He thinks she's naive. She even takes some meals from her mom and serves it to husband for dinner as if she's made it herself. I can't tell if this is a survival tactic or is she just a manipulator? I try not to pry too much, maybe she's saving up to leave him..