If the remote you have in the other room doesn't have a pairing button, it will work with a Roku 1. The only Roku device that won't work with infrared remotes are the Roku stick (since there's no line of sight)..
Does she have a smartphone? If so, get rid of the fancy ultra remote, get a regular infrared roku remote, and install the Roku app on her phone. She can use private listening on the phone, with earphones.
There might be something else such as a Captcha authentication that you're not hitting. If you can post a screenshot, upload it to a free image hosting site and post that here, we can see exactly what you see.