jokingly saying "I know" when commenting on her beauty
I didn't notice any joke. She replied like her dating schedule had been booked years in advance - while in reality she's meant to be isolated and deprived of any deep relationships. If you're walking down the street and suddenly, I don't know, Margot Robbie jumps out of a limo and tells you "you're beautiful" you would hardly reply with "I know" even jokingly.
I'd just go and find the next game that does bring you positive emotions
Thanks to the ever-wise Sven Vinke who allowed game modifications, Wyll, Gale, and Astarion just received gender swaps and female voiceovers. Wyll, in particular, is absolutely perfect as a woman - loyal, trustworthy, and easy to talk to. In fact, Wyll is perfect as a human. I'm very curious: why are all three main male companions so pleasant to interact with, while two out of three female companions come across as insufferable bitches, and the only pleasant one is a dead man walking?
So no, BG3 has plenty of good characters, but Lae'zel and Shadowheart were the worst of the worst female characters selected as main companions with complex quest arcs.