People are even more insecure than Frank is, which is funny because the overlap between those people and the people calling Frank a wimp isn't low. Since it was established very early on that Lilly and Abby are a thing it shouldn't really be a surprise that Frank supports it since Patre... I mean he still has quite a problem with the adopted daughter/father thing. For me personally, it was the introduction for a Frank-Abby-Lilly scene. I personally think that if generally only one party is allowed to be angry: Abby. Just think of the advice Frank has given Lilly in previous updates. Or just the fact that Frank and Lilly have a parallel thing going on while they both know what Abby wants but are willfully ignoring it. And the combination of the two previous sentences.
Personally, I think a veeeeeeeeery upset Abby is the only legitimate development. The only one she probably wouldn't be upset with is probably Meiko, since she's had a crush on Frank for a very long time and was blackmailed into silence by Becca.
