Is this "normal" behavior for 6 year old

My 6 year old daughter has always been very behind emotionally and behaviorally. (We have her in a couple therapy sessions every week.)

When she was younger she surprisingly never really got into anything she wasn't supposed to. Now that she's older she's starting to do things I feel like a 2 year old would do.

Some examples would be: Spitting all over the toilet seat, flicking her poop in the bath tub, coloring on walls. Now she plays with the wax in my scentsy warmer and rubs it all over the counter/sink. "She continues to do these behaviors after addressing them."

She's done a few other questionable things that I can't think of at this very second but I'm wondering if this is pretty normal for a 6 year old? I can't really tell since she's always been behind and she's my first child.

Thanks.