AIHA for refusing helping my ex?

My ex and I work in the same profession. Things ended on a sad note and both of us are still recovering. In the mean time, she lost job and then entered another firm to meet her bills. The work was toxic as he was required to take additional responsibilities. Like a week of work to be completed in a week. Moreover, her senior at work has no idea what to do which meant she has to do 2 person job. The senior would say 'since im new to this, it's better you (my ex) do and I make a mistake.' Now she is desperately looking for a job.

So while we do talk, she asked me if I could help her with some referral for work or help her prep for an interview (the interview prep came up as I work in that domain and she wanted me to provide her with some questions that she can prepare for, and her friends dont have the domain expertise). I refused. Now she doesn't talk. AIHA?

AIHA for refusing helping my ex?
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