Villain is same Middle-Aged Lady from the Q9hh hand. Still relatively readless, as she left the table for awhile and only recently came back. Her raise on the flop made me think she had a lot of Kx, occasionally Jx, some nut hands like 55/JJ/KJ, and basically no draws. So my intention on turn was to either hit my gutshot or A, or pick up FD equity & bluff her with diamonds. On river I contemplated overbetting, but wasn't sure whether a Kx would make a stubborn call, and didn't know if I could actually represent Jx here, as my original plan was just to bluff diamonds, so I just check intending to give up. Her tiny river bet looks a lot like Kx trying to get thin value, but I really have no idea if a random rec is capable of doing that in position on this board? Also stack-to-pot is a little on the shallow side. So I got a little out of my element not knowing how exactly to weight her range & my fold equity and curious what others would have done. Thanks.
Hero ($330): Ad Qc
fold, Hero raises $20, fold x 4, Villain calls OTB, SB/BB fold
Flop ($44): Kd Jc 5d
Hero bets $25, Villain raises to $55, Hero calls
Turn ($154): Js
Hero checks, Villain checks
Hero checks, Villain bets $55, Hero ???