We cast these two cleansing/banishing spells, and warded the window out of which the spirit was expelled. Ash says it might still be a while before she feels up to working with the astral again. At least, hopefully we are free from negative energies.
http://blythespirit.tumblr.com/post/160346064694/sorry-to-bother-you-but-im-inexperienced-with
http://blythespirit.tumblr.com/post/160346033099/youre-not-welcome-here-bothersome-spirit