"I don't want to work with him"
Without knowing why, you can't address / fix this.
"he doesn't discuss"
If this is true, you should involve your team more and let them see you listen and engage with them and what they bring to the table.
Have debates or discussions about procedures or things that are flexible and within the teams scope to establish or adjust.
Make decisions once you heard different suggestions.
Stick with that and be ready to explain (if appropriate) why this is the way to go in case of resistance.
"he doesn't help"
Make sure your team knows your door is open for any issue and that you gladly help if you can.
Don't pamper them or treat them like children but be willing to help where they're stuck or struggle.
I missed the examples of her complaint,so I changed my answer.
Please find the original below.
You need to know what her complaint was to your manager (ask him if he didn't say).
You need to find a way to address her issues with you in a way that she doesn't suspect you know of her complaint.
If it was just trash talk it's more difficult because now you have to inconspicuously fish for her reason in conversations with her.
You need to "play nice", be professional and respectful and observe her behaviour towards you closely.
This could be a good topic for the sister site interpersonal skills.
You could attempt to find a way to "catch her" while she trashes you again or potentially ask your manager to let you know when she did it again and you "could have overheard".
Then, you can flat out confront her(in a calm, respectful demeanor) and simply inquire why she did that, what her grievance is with you and what you can do to mitigate(!).
You could (should) send her an email(paper trail) afterwards outlining what you discussed, especially if there are things that each of you could or agreed to do in order to remedy the situation.
This would give you leverage should she continue or your manager start to believe her / getting fed up with your "incapability" to fix her behaviour.