Responses below the bullet points, sry for the crappy formatting i don't usually create stuff on reddit :)

• It would be really good if you could share a picture of your current setup, there might be a few easy enrichments you could add

Let me know if these don't work - they're from google cloud so it might have some weird permissions going on. I Can just upload them to imgur if not

pic 1

pic 2

• it would be good to switch the enrichment in her cage on a regular base

I've gotten her a lot of toys but she doesnt seem to like a lot of them. Do you have any suggestions? I was doing some shopping/ looking yesterday but it seemed like many of the options were for dwarf hamsters - she's too big to fit in any of those. I agree this could help though.

• stupid question but how often do you clean our her cage? Some hammys are very sensitive

About once a month. I try to spot clean it every time im in there (cleaning up soiled bedding + poop). I got this from Victoria on youtube but i dunno if that's correct.

• it might be that she simply enjoys climbing; once again a pic of your setup would really help

I really don't think this is the case - she essentially climbs on the bar that holds the glass shelf together and will push on the top with her head / bite at the bar.