I have just been reading a book called The Definitive Guide for Solving Biblical Questions about Mary: Mary Among the Evangelists. It is available on Amazon, and you can read it for free on Amazon Unlimited.
It is a very big interesting book that leans hard on the Greek used in the Gospels, coupled with parallel texts and usages in the Septuagint, and the comments of various Fathers of the Church. But it also deals with the literary structures set up in the Gospels. If you look at all this material, you can see where additional information is being set up about about Jesus and His mom, and His situation with disciples and family members.