User blog comment:Qwertyxp2000 the second/Balance change suggestions for Version 20.0/@comment-28233426-20200722133635

A change I think should be added for Gwen is to have her Purple bloon popping ability moved forward as an upgrade. By the time you get it in a normal game... it's useless. It'll only be functional in Freeplay!

If it was pulled forward to either Level 9 or 11, I think that would be about right.