Board Thread:General Discussion/@comment-67.248.240.148-20170908201845/@comment-26397825-20180321120315

You know, there is also the option that she fell pregnant while completing her last year of school. She could have only stuck around for a few months after graduating to finish the pregnancy, tie up loose ends and track down where the tribe was at the moment, and then ditched just after giving birth.

Or she stuck around when she and Qrow were first turned into birds and did Ozpin's bidding, joined his crusade, since she 'accepted' the transformation ability... and then used the Tribe as an excuse to run when she got scared. That was basically the culmination of her character in V5; she was scared and ran away, and has been running since.

This theory allows for Raven to have entertained the idea of leaving the Tribe like Qrow did, and starting a family with Tai, but then when she learnt 'too much' (according to her anyway) she got cold feet and ran back to where she felt 'safe' - the tribe she grew up in, which was small and insiginifcant in the scheme of things and therefore unlikely to get involved.