Hmm. No doubt, if you're unattractive she won't ever send you the IOIs on purpose. By unattractive I don't mean ugly. I mean, sensual EC, proper alpha male body language, alpha male everything to an extent. Just you projecting you're the man.
Ignoring means giving her same attention as you'd give to an old shrunk lady.
It does not mean freeze up around them, or avoid contact with them. Because that way you live in their world. That's already feeding them attention by its virtue. Instead, they should be perceived as something unpleasant that you aren't letting inside your world.
Exactly same as you'd walk past a fat chick, or a chick with down syndrome. This can't be faked. It's something you can do easily though, if instead of their beauty you focus on the beauty or ugliness of their actions, their body language, their motivations. Get turned on/turned off through what's underneath.
You lower their value this way. They can sense that. While your value is high, they will flock to you. Often to sh1t test you and possibly fail you, so that they can validate them selfs. That's another reason not to make anything more than an fbuddy out of women like that, and even that must be played out right.