Too smart to be a bimbo? Her life isn’t smart. Her values are cup over tea kettle.
Sorry, but She’s not a bimbo, not by any definition of the word... There may many adjectives you can use to describe her, but that is not one of them.
Calling her a bimbo is no different than calling a Conservative a Nazi... neither word is remotely appropriate, and is just being tossed about without any care to its meaning in attempts to lob adhominem attacks.