I estimate we're, at most, 35% equity (probably closer to 30% since villian's range is mainly AA), we have miniscule FE, and villian is a standard super nit. Felting is not the best option. Calling may be better than folding since we do have equity, and standard super nits are always scared without the nuts. We'll see a cheap showdown here a decent amount of time. No need in felting when behind when villian will call off non-spade AA yet not push, and I think a fold is still better than a crai.