Stacks: 900 each - game is 1-2, with 5 straddle in this hand

3-bet bet of 15 to 45 with 5s,6s in SB. Raiser flats in HJ. Heads up. Flop q,2,3 (2 diamonds, one spade) I lead for 45, she raises 105. I flat. Queen is only possible hand, had history of loose plays with her, think she's wide. 8 spades on turn. It goes check-check (would have check-raised). I lead for £150 on the river (10 hearts). Thoughts? She can't have aces, kings. Could have AQ,KQ,Jq,q10,q9,q8. But she raises so small on flop. Feels like she probably doesn't have a queen, and given such a cheap card when I could have major draw at minimum. A middle pair below JJ makes sense. I block some 5,6 combos but 77,88,99,1010 seem possible cards to take this odd line with betting unbalanced for info. I don't think a draw raises the flop. Feels like a capped made hand. Or a set, but only 4 combos are possible. Also think my line on flop turn is defensible. Ignoring outside chance of a queen, I have two over cards, and up and down, she's taken flushes out of her range I think, and I haven't, so can rep any diamond well. Also, my queens are intact. Think it's also consistent to give up betting lead with that range but still be comfortable to make a thin value bet when it checks on the turn. Thoughts?

Think key error is raising 5,6 suited oop, but post flop, and in particular the river lead. I felt as if I could legitimately represent a lot of thin value hands. history with this player of continuing capped ranges and giving up when strength represented.