There’s a lot of subtext in the YoSaffBridge episodes to indicate that if she was capable of feeling true attraction to and affection for any of her marks, it would be Mal.

Fennec is the closest thing to a mobile version of Librewolf. It doesn’t have all the privacy and security tweaks as Librewolf but it’s far better than mobile Firefox.

There’s also Firefox Focus but it’s more difficult to use as a main browser since it defaults to wiping all traces of history and settings after each session.