Pattersons are usually perfect, so does Johnston understand here what a bitch Liz is being to April? Granted, on the grand scale of things, April's problems are small potatoes but she doesn't live on the grand scale of things. This is just part of the family dynamic whose basic rule is that nothing that bothers April really matters, which is why when Liz, Mike and Mike's family came back to Casa Patterson, it was April who got sent to the basement. She's probably lucky she wasn't sent out into the wilderness, barefoot and unarmed, to forage for herself.
Personally, I think the rest of her family still blames her for Farley's death.