
It wouold seem she is a pretty excitable reactive kind of dog at the best of times. Being in season her hormones are telling her that she needs to find a mate, so she is very unsettled. Being confined with less excersise is also not helping her to settle.
I would personally have a tiring game of fetch the ball or whatever she likes, to use up her pent up energy.
Then she needs to learn to settle and not run about attacking telly etc. It may be an idea to get a light lead on her and hold it so that you can control her movements when she is supposed to be chilling out.
A Crate would also be great for this and for settling her at night. She wouldn't be able to get up and annoy you. They are also great for using in the car in order to keep her and you safe, and for when you visit freinds and relatives, as it will be somewhere she can settle safely, or be put out of the way. They fold down neatly and can be stored away flat.
There are some very good quality crates on special offer at the moment from Marlin. They have rubbber feet rounded corners, and a door in the short end and in the top, so would be excellent for use with a small dog like yours.
The size that I think would be good for you would be the Delux Edition Medium, which is 24inches long, 18 inches wide and 23 inches tall, it costs £30 +post and Packing. (t has a plastic tray with metal protectors around the edge to deter chewing, and comes complete with a Cotton Dirt Trapper mat. I bought one just before Christmas to use with my pup and am impressed with the quality. It also has a little door within the door so you can put a lead on or off without the dog getting out,or to put food or water in and out. Their phone no is Tel. 0870 22 00 686
I bought the next size up (31 x 22 x 26) for use with one Elkhound as it is just big enough for one (I have a large metal crate, and a fabric one for two or more).