Woman spends a lot at charity shops, gets tired of one question

A woman likes to shop in charity stores but does not like it when the staff asks her for more money.
When she buys things, she sometimes feels bad because the staff asks her for a little more money. She spends £150 to £300 every month in charity shops. The money first pays for the shop's costs, and then the rest goes to the charity.
She buys a lot of things from charity shops, some for herself and some to sell. She is happy to spend money in these shops.
One day, when she was in a charity shop in Bury, a staff member asked her a question that she did not like.
She could not remember which shop it was, but she had picked up two items before going to pay.
The first item was a £14.99 dress, and the second item was an £8.99 dress.
The staff member asked if she wanted to add 2p to make the total £24. She said no and felt a bit bad about it.
She thinks the staff might have been told to always ask this question, but it made her a bit annoyed.
She would prefer it if the prices were just £15 and £9, without being asked for more money.
She said it was only 2p, but she did not like being asked for more money when she already gives a lot to charity shops.
Some people who watched her video were not happy that she did not give the extra 2p.
One person said that they always round up the price and let the shop keep the change, because it is for charity.
Some people agreed with her, saying that it is not nice to be asked for more money after donating.
Another person said that it is their choice whether to give more money, and they do not like being asked for donations when they are already paying for something.