The 26-year-old told BBC News NI she hasn’t always received benefits.
“Whenever my older three were quite young, I worked for years on and off.
“I love working, but whenever you get set back and then you can’t go back out to work, it’s then it really hits you. You haven’t got that extra money coming in.
“Then you’re having to go from working and getting a good wage to being on the benefits that you’re on.”
Ms Campbell said her children always come first with her often going without.
“My kids would always come first no matter what, like, but it takes a toll on you,” she added.
The change could be worth £75m to families in Northern Ireland, who are more likely to benefit from the change, with larger average family size than the rest of the UK.
A 2019 House of Commons library report, external found that 21.4% of families in Northern Ireland have three or more children, compared to just 14.7% in the UK.
