Should I stay or should I go?

[changeagainagain]

I have been in a new job for about a year, complete career change. The thing is it is not quite the job I was expecting, sometimes it doesn't feel like they even want me there. I feel I have given it a good amount of time so it is not just the transitional period.

The person I do the job share with (who has been there a long time) creates extra work for me in an unnecessary way, leaves jobs for me to do that she should deal with on her days in, makes sarcastic comments to me in front of other people, or comments about me when she thinks I can't hear.

I was in a job before where I was completely respected and I don't feel this at all now.
The only reason for leaving my previous job was because I had been there for twenty years and felt like I needed a change.

So my question is: should I just take advantage of the new skills I have learnt and look around for something else or stick it out for a bit longer? What would you do?

I’d look for another job, but meanwhile call this woman out on everything she’s doing.
Ask her in front of colleagues why she has left work undone that she should have completed. Whenever she makes sarcastic remarks in front of others, look puzzled and ask her to explain what she means. Insist until she’s crawling with embarrassment at having to spell out her rudeness. Ask her why she’s creating unnecessary work. Don’t let her off with anything. She’s trying to make herself look the better half of the job share by putting you down - so fight back. She’s almost certainly insecure. Most bullies are.

Thank you for taking the time to reply I don't feel in a position to pull her up on any of it because it will just
Ale awkwardness which I don't like. I just don't know why people can't be nice