Hey Mizz -
You deserve all the good thoughts and vibes.
So, there's three people instead of two? You just have a chance to shine a little brighter.
You relocated - that's a really good reason to leave a job.
The sexist environment reason is something I would encourage you to refrain from listing as a reason. First, you don't want to rip on a past employer - especially as sexist. That can really scare off a potential employer because they don't have all the facts. Boy, that's a real can of worms - even if it's as true as the day is long.
You're going to school to better your career so that's a really good thing.
You relocated, took what work was available, and now you're looking for a position with potential for growth. Sounds good to me.