£340,665 Just shows the retained profits in the company. £421,970 is what she has in the bank. The £340,665 is money the shareholders can take out of the company if they wish, this doesn't show the true profitability of the company as this figure is after any dividends and salary has been drawn from the company, for all we know she could have taken tonnes out before this.
Also looking at her accounts, the shareholders funds have increased by £179,742 in the past year. This means she has made a net profit after tax of at least £179,742. This is again stated after any dividends or salary will have been drawn which of course there will have been some taken!! She's doing pretty well by the looks of things