Or, even easier, search the thread itself on the page, using Ctrl-F on a PC, Cmd-F on a Mac, or on an iPad in Safari use the Find on Page mode of the Search bar. Put in the OP's user name and you can step through her posts without leaving the page, though you will also get any replies that use the posters full name, but it's easy to skip over them.
Advance search the OP's name. Find the relevant thread and you can work your way through just their posts. Click on the first unread post, read it, use your browser back button to return to the list, click on the next post, etc.
I am currently following a couple of very long posts and pop back every couple of days just to see if there's an update, is there a way of seeing just the op's posts rather than reams of other people's opinion and bunfights?