Napier City Council, organisations, agencies and police have put in place measures to help the growing problem, which is also occurring in Napier CBD, but the public need to do more, she said.
"They have done everything in their power."
The only thing that can help, other than a law change, is if people stop giving beggars money, she said.
"There is really nothing else that can be done.
"This is quite serious stuff, people need to stop giving money to beggars."
It is understandable that people feel sorry for the beggars and want to help but it is better to give money to an organisation that can actually help them, she said.
"The Marewa residents are fed up with it, everyone is being intimidated by these beggars.
"Our businesses are suffering, children also frequent that shopping centre."
Ms Dorday has lived near the shops since 2008 and has noticed the problem get "really, really bad" in the past few months.
"Everybody is just so fed up.
"This shopping centre is really community shopping centre and it is being taken over.
"It's having a really bad effect and it's not acceptable."
Marewa Four Square manager CJ Fu said he also thought the only way to get the beggars away from the shopping centre was if people stopped giving them money.
"People need to stop giving them money.
"The public has a lot of power, if we can get them to realise that if they stopped giving them money they would go away.
"A lot of people do still give them money otherwise they wouldn't still be sitting here."
Many of them are pretending to be homeless to get money for drugs and alcohol and are intimidating customers, he said.
"A lot of shop owners have a problem. We've got a couple of really bad ones who will frighten elderly and disabled citizens."
Over the past couple of months numbers at the centre had dropped with people pulling up at the shops seeing beggars and leaving or not coming at all, he said.
"We, the shop owners, feel that because of them business is going down."
This problem gets worse on the weekend and after hours and one time there were about five beggars outside his shop and he could not leave for fear for his safety, and no customers would come in, he said.
"I feel intimidated, most of my customers are intimidated and I feel helpless, I can't go on like this."
Napier City Council has increased security to come three or four times a day recently but the beggars have started to learn their routine and will walk around the corner until the security has passed, he said.
This is only going to help in the short term.
Flavour of India manager Raj Painuri said he also felt worried about beggars outside his store.
"It is a big problem. Sometimes people buy them food but they won't take it, they just want money.
"The customers are always complaining."
Napier City Council and other agencies launched the Helping Hands campaign earlier this year which encourages people to donate to legitimate agencies rather than those begging on the streets and some positive results have already been seen with some organisations receiving more donations to help beggars.