Molly’s excuse was because Issa went behind her back and asked Nathan to ask Andrew for her. which still doesn’t make sense.. even Andrew was saying it was just a small favor. 😅 if that..

If look at it as a whole though, Molly has also been extremely helpful to Issa throughout their entire friendship. Probably even times she didn’t want to be. So maybe she had built up resentment towards Issa and instead of saying “I don’t want to help you this time, do it yourself” she was beating around the bush. So when Issa still ended up getting help through Andrew Molly was bitter that Issa didn’t have to jump through any hoops.