Glenda has an Asus Gaming computer and it constantly slows down, and is too heavy. So she wants something lighter, like a Mac Air or iPad Air size, that she can use Microsoft Office with. Leo says that there are versions of Office for the iPad, so going with an iPad Pro could be a good option. You can get them with a keypad and it's just like a laptop (costs the same as a laptop, too). Microsoft's Surface tablets are also a good option if you still need to use Windows. But if you don't, then the iPad Pro is worth looking at.
Another option is a Chromebook. That's the budget choice. It uses Google's Office suite, stored in the cloud. Very secure. But it can also use the web versions of Office. Simple is the better way to go.