Hey guys, my moms in town and has never paddled in a hardshell kayak. I there any class 1 (floating really) that is very scenic you would recommend?

lower lower sky? there may be other class I sky options too...

Some good suggestions here.

On the Skagit, either the Bacon Creek to Marblemount or Marblemount to Rockport sections should fit the bill. Both sections have a few easy riffles. It is a big river so you can count on swirly water and strong currents, even though the rapids  are class II- at best.

Lower Sky is good too. The section Jimmy suggested is a good one for a shorter float.

The SF Skykomish from Beckler confluence to Baring is a very scenic float. Mostly just swift drifting with a few class 2 rapids thrown in. The biggest waves are in the rapid you can see from Hwy 2 just above the Money Creek bridge. You can probably find a place to put in by the bridge to avoid this rapid.

The Snoqualmie from the powerhouse takeout down to Fall City is a nice easygoing float. On a hot day you'll be sharing the river with folks with Kmart rafts and coolers of beer.

The upper Wenatchee from Lake Wenatchee down to Tumwater campground is mostly easy drifting with a few class 2s thrown in. It's a long run, but you can use alternate access spots to make it shorter.