A record crowd of more than 6,000 in Dublin was followed by almost 5,000 fans watching the success over Scotland, the highest attendance for a women’s international in Wales.
“I would never have thought we would get that crowd, we are thankful of the support we have had,” said Jones.
“There was a tournament in the Principality Stadium with all the little girls playing there and they then came over and watched our game.
“It was a great atmosphere and it was much better playing in front of a crowd like that than empty seats.”
The numbers will rise again this weekend, with more than 11,000 supporters expected at Kingsholm as England aim to extend a 20-match winning run.
“We can’t afford a slow start,” added Jones.
“We are playing the world number one and if we do that, they are going to punish us.
“We have to start fast and go for it. We have nothing to lose and I am looking forward to the challenge ahead.
“I am looking forward to seeing what we have put in training and seeing if we perform against the best.
“We will face the pressure of having to play in front of 11,000 with the world’s best in front of you.
“If you want to be the best you have to play the best.”
Jones knows Kingsholm well given that she plays her club rugby for Gloucester-Hartpury.