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Bouncing off a colored wall and window light ... yup, that'll do it. Two different colors @ key vs fill.
Also, if you were using window light, it was likely blue if you shot it @ noon or so, since no direct sunlight (i.e. only skylight) could come through the window. So, having cool window light and flash bouncing off a warm wall (plus areas of overlap) makes a tough gig for getting good WB throughout.
If this had been a different time of day (i.e. golden hours), your window light could have been on the warmer side of "white" if direct sunlight were coming through. Then at least the colored wall and window light would be a closer match at degrees of variance (warm vs. warm) rather than polar opposites (cool vs. warm). Optionally, you could use a neutral item to bounce your flash if you want to mix with the window light. Then it would be cool (or warm time of day dependent) vs. white. Also, you could use the flash as "key" rather than "fill" and allow the window to play the role of fill. Using the flash as key has the added benefit of more contrast in your lighting.
Notice too, the "rainbow" across the dog revealing the transition from cool to warm as the two light sources blend. You can see the "rainbow" again in the foreground tiles. It would be helpful if both these "white" areas had only one color cast to correct for.
With two color casts involved, correcting for the blue cast by warming it will intensify the warm cast. Going the other way to correct for the warm cast by cooling it will intensify the cool cast. Having two casts puts (especially warm vs. cool) you in a "catch 22" of push/pull for WB cast correction.
Another piece of the puzzle @ generating "pop" ... if your window light is diffuse and you bounce your flash to diffuse it as well, it is a bit more challenging to create the contrasty "pop" without contrasty light. North light (indirect window light) has its appeal and is widely regarded, but it comes with reduced contrast (the appeal for "soft" light) and non-white color variance. If it is "pop" you're after, it might be worth reconsidering the role/utilization of your window light.