New team member

[PrioritiseCalm]

Gave someone a job over summer (Aug) in our small team

Since then she's taken s holiday, asked if she can change her job title (to a more senior one) and now she's moaning about her salary.

AIBU to wonder why she took the job in the first place?!

Of course it's the leave you are objecting to otherwise why would you mention it? It's one of your main complaints about her right there in your first post.

If it’s not the leave you are objecting to then why would you mention it in the list of examples of bad behaviour (as perceived by you)?

On the other two points, generally I would not expect people to be discussing pay increases and job title changes within this time frame. However I would try to find out why she is asking? Perhaps she has joined and then found that she has been pitched too low (in salary and title) in terms of other members of staff.

This. I’d let her go, she sounds like she could be a troublemaker and would leave at the earliest opportunity.