Framed abstract painting with orange arc

I found a framed abstract painting this afternoon around 4:15pm, left on the pavement outside the Belgrade Theatre on Belgrade Plaza in Coventry City Centre. It's about 40x50 cm, in a dark walnut wood frame with a cream mat, and the artwork features soft pinks and blues with a bold orange arc sweeping across the canvas. On the back there is a small circular sticker with the initials KM and the year 2023, plus a faint Studio L label. It looks well cared for, though the frame has a couple of light scuffs. If it's yours, I'd be glad to help reunite you.