The skirt and top are not appropriately businesslike. Business attire (especially when an employer is serious enough about it to require it for an interview!) means solid colors, formal cut, and definitely a jacket. If you have time by now, and you have a very good thrift store or consignment store in your area, get there pronto and find a suit or at least a blazer or other businesslike jacket and a plain blouse, neckline higher than the one on the web site, and a plain straight skirt -- no ruffly, patterned "peasant skirt" like the web one. A jacket or blazer is pretty much the very definition of business attire, frankly, unless you have a very formal-looking blouse. (At least here in the DC area....)
No sandals, even "dressy" ones. Closed toes, pumps preferred, but not high heels- those are not businesslike at all. I know you don't want to shop and don't have much time but the items on the web sites are not going to meet the business definition. The black shirt and black dress pants WITH a blazer might make it in a pinch with closed toe shoes, but the dress pants need to be truly dress -- not tight anywhere, not capri length, not patterned or embellished.
Many consignment stores are used by women who are professionals to sell off their work suits and blazers so you might do well at a good consignment store! Around here there are ones where "Junior League" type professional women sell off expensive goods at prices the rest of us can afford. I feel for you -- it's tough to come up with a specific outfit just the day before an interview when it's not stuff in your closet already! Good luck with the interview!