**SHOW your Husband, the responses you get here. It may help.
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No, I don't have the opinion that an Aunt's 'job' is to spoil the kids.
Nor do I agree with your Husband.
My kids have a super generous Aunt.
She gives them ALL kinds of things, including sweets.
BUT, over time, we have gotten her to know that she has to "ask" us first, if it is okay.
I do NOT like my kids, always having candy/ice cream/treats, just because she is in the vicinity or at our house, or out with our kids.
The amount of candy/treats she gives them, would be a TON.... and is more than even a sane adult has in 1 week.
BUT.. what we do with our kids is this: Since a very young age, we taught them that WE are the parents. And this is the pecking order of things. My kids are now 4 and 7 years old. But even when younger, they will actually tell Aunty if she offers them something "We have to ask Mommy first..." or, 'I better check with Mommy if that is okay...." We taught our kids, how to stand up to Aunty. And that they need to ask us first... because we are the parents... and Aunty is not.
And if they are out with Aunty and we are not there... and Aunty wants to give them sugar treats or toys.... my kids will actually tell her they need to CALL Mommy/Daddy first... and they will actually CALL us on her cell phone and Aunty or my kids will ASK us first, if something is okay.
We are not anal about it or militant about it... but we steadily, made this the 'habit' and explained to Aunty. This is our kids and this is the 'rules.'
So... Aunty will now ask us.... if something is okay. She had to learn 'respect' that we are the parents... NOT her.
So... we taught our kids about it and how to handle it too. And we 'taught' Aunty... what the process of things are.
You either be proactive... and teach your kids/relatives about it. Or you let it happen and get all frustrated or pent-up about it... and the kids 'learning' that relatives are able to just do whatever they want and that they don't have to listen to you, either. YOU are the parent... and a child... still has to know that.... not ignore your 'rules' just because certain people or relatives ignore you.
And in your case... you said Aunty is there MANY times a week. So... you need to have boundaries... about what she gives your child, too.
Anyway, we now have no 'battles' about things like that with our kids or with Aunty.
all the best,
Susan