Does quran depict Mary as a part of trinity by mentioning her along with Jesus in the context of quran 5:73-75?

In quran 5:73 those are declared disbelievers who believe in trinity. My question is after mentioning trinity why does quran mentions the two persons as Jesus and Mary in 5:75. Now anyone would conclude from this that quran is assuming mary to be a part of triniry. I know though she is worshipped but what's the point of mentioning her in the context of quran 5:73?